Tag: NASA

New Space: “Sail Rover” to Explore Mercury

zephyr-580x435In addition to their ongoing plans to explore Mars for signs of life, the Jovian moon of Europa, and tow an asteroid closer to Earth, NASA also has plans to explore the surface of Venus. For decades, scientists have been yearning to get a closer look at this world’s pockmarked surface, but the volcanic activity, clouds of sulfuric acid and extreme heat are not exactly favorable to robotic rovers.

But according to NASA’s Innovative Advanced Concepts program, a windsailing rover could be just the means through which the hellish surface environment could be surveyed. This rover, nicknamed Zephyr, would use the high speeds and hot temperatures of Venus to its advantage, deploying a sail after entering the atmosphere and sailing to the ground.

mercury_surfaceThe rover would not be able to move around the surface, but would have electronics inside that are able to withstand the temperatures of 450 degrees Celsius (840 degrees Fahrenheit). Whenever the science team wanted to move some distance, however, they would deploy another sail that could use the wind to transport it across the surface. But mainly, the rover would remain on the ground conducting surface analysis.

Geoffrey Landis, who is with NASA’s Glenn Research Center and a part of the project to develop Zephyr, has long been an advocate of exploring Venus. This has included using solar powered airplane to explore the atmosphere, and colonizing the planet with floating cities. On the subject of Zephyr, he stated that:

A sail rover would be extraordinary for Venus. The sail has only two moving parts-just to set the sail and set the steering position-and that doesn’t require a lot of power. There’s no power required to actually drive. The fundamental elements of a rover for Venus are not beyond the bounds of physics. We could survive the furnace of Venus if we can come up with an innovative concept for a rover that can move on extremely low power levels.

venus_terraformedIn addition to providing volumes of information on the planet’s, exploring the surface of Venus could yield some interesting clues as to how it came to look like something out of Dante’s Inferno. It has been suggested that at one time, Venus may have boasted an atmosphere and surface water similar to Earth’s, but was transformed into a toxic nightmare thanks to a runaway Greenhouse Effect.

Studying how this came to happen would go a long way to helping scientists understand Climate Change here on Earth, and as well as give them the chance to test out possible solutions. And of course, any working solutions might go a long way towards terraforming Venus itself, which is something many scientists are currently advocating since it might be cheaper and less time consuming than transforming Mars.

Then again, if the resources and budget are there, there’s no reason why we can’t try to retool both for human settlement. After all, we might not have much a choice in the coming centuries. Human beings aren’t exactly known for their slow population growth or conservation skills!

Source: universetoday.com

News From Space: We Come From Mars!

Mars_Earth_Comparison-580x356Men are from Mars, women are… also from Mars? That is the controversial theory that was proposed yesterday at the annual Goldschmidt Conference of geochemists being held in Florence, Italy. The proposal was made by Professor Steven Benner of the Westheimer Institute of Science and Technology in Florida and is the result of new evidence uncovered by his research team.

The theory that life on Earth originated on Mars has been argued before, but has remained contentious amongst the scientific community. However, Benner claims that new evidence supports the conclusion that the Red Planet really is our ancestral home by demonstrating that the elements for life here could only form on Mars, and came here via a Martian meteorite.

Asteroid-Impacts-MarsAccording to the theory, rocks violently flung up from the Red Planet’s surface during mammoth collisions with asteroids or comets then traveled millions of kilometers across interplanetary space to Earth. Once they reached Earth’s atmosphere. they melted, heated and exploded violently before the remnants crashed into the solid or liquid surface.

All that would be needed is for a few of those space born rocks to contain microbes from Mars surface. These building blocks of life would have to survive the journey through space and the impact on Earth to make this happen. But research into Exogenesis – the possibility that life was transplanted on Earth by meteorites – has already shown that this is possible.

curiosity_sol-177-1What’s more, NASA’s Curiosity Rover was expressly created to search for the the environmental conditions that would support life. Less than half a year into its mission it accomplished just that, locating proof of the existence of water and a habitable zone. Between it and the Opportunity Rover, the search to determine if life still exists – in the form of organic molecules – continues and is expected to yield results very soon.

But of course, Benner was quick to point out that there is a difference between habitability (i.e. where can life live) and origins (where might life have originated). The presence organic molecules alone is not enough when it comes to the mystery of life’s creation, and when it comes to making the great leap between having the necessarily elements and the existence of living organisms, scientists remain hung up on two paradoxes.

These are known as the tar paradox and the water paradox, respectively. The former paradox addresses how life as we know it comes down to the presence of organic molecules, which are produced by the chemistry of carbon and its compounds. However, the presence of these compounds does not ensure the creation of life, and laboratory experiments to combine and heat them has only ever produced tar.

mars_lifeAs he puts it, the origin of life involves “deserts” and oxidized forms of the elements Boron (B) and Molybdenum (Mo) – namely borate and molybdate. Essentially, these elements are the difference between the formation of tar and RNA, the very building block of life:

Certain elements seem able to control the propensity of organic materials to turn into tar, particularly boron and molybdenum, so we believe that minerals containing both were fundamental to life first starting. Analysis of a Martian meteorite recently showed that there was boron on Mars; we now believe that the oxidized form of molybdenum was there too.

The second paradox relates to water, which is believed to be intrinsic for life to flourish, but can be also hazardous to its formation. According to modern research, RNA forms prebiotically, requiring mineral species like borate to capture organic elements before they devolve into tar and molybdate to arrange the material to give it ribose – organic sugars, also intrinsic to life.

Mars-snow-header-640x353This can only occur in deserts, he claims, because water is detrimental to RNA and inhibits the formation of borates and molybdates. And from a geological standpoint, there was simply too much water covering the early Earth’s surface to allow for this creation process to take place:

[W]ater is corrosive to RNA, which scientists believe was the first genetic molecule to appear. Although there was water on Mars, it covered much smaller areas than on early Earth. Various geologists will not let us have these [borates and molybdates] on early Earth, but they will let us have them on Mars. So IF you believe what the geologists are telling you about the structure of early Earth, AND you think that you need our chemistry to get RNA, AND IF you think that life began with RNA, THEN you place life’s origins on Mars,

All of this has served to throw the previously-held theory – that life came to Earth through water, minerals and organics being transported by comets – into disarray. Based on this new theory, comets are a bad candidate for organic life since they lack the hot, dry conditions for borate and molybdate formation.

Living-Mars.2If the new theory is to be believed, Mars boasted the proper conditions to create the elements for life, while Earth possessed the water to help it flourish. If such a partnership is needed for the creation of organic life, then scientists will need to reevaluate the likelihood of finding it elsewhere in the universe. Between the existence of water and hot dry environments, life would seem to require more specialized conditions than previously though.

But of course, the debate on whether Earthlings are really Martians will continue as scientific research progresses and definitive proof is discovered and accepted by the majority of the scientific community. In the meantime, Curiosity is expected to rendezvous with Mount Sharp sometime next spring or summer, where it will determine if organic molecules and elements like Boron and Molybdenum exist there.

And on Nov. 18th, NASA will launch its next mission to Mars – the MAVEN orbiter – which will begin studying the upper Martian atmosphere for the first time, determining its previous composition, and where all the water went and when was it lost. So we can expect plenty more news to come to us from our neighboring Red Planet. Wait and see!

Source: universetoday.com

A Menu for the Mars Mission

hi-seas1Throughout the summer, six people participated in an experiment designed to test how people will deal with the physical and psychological strangeness of a manned space journey. Known as the “Hawaii Space Exploration Analog and Simulation” (HI-SEAS) study, the research took place on a desolate slope of an abandoned quarry in Hawaii, 8,000 feet above sea level.

Here, the volunteers lived in a two-story geodesic dome and put on a full space suit to venture outside. Their communications were limited, their shower time rationed, and each spent much of their time conducting individual “space” experiments. But most importantly, they were eating food fit for a Mars astronaut. This was the main purpose of the experiment, testing the menu that manned missions to Mars will have to offer.

hi-seas2For years now, scientists have been trying to find ways to make astronaut food more palatable. In space, the food is either dehydrated and requires water and heat to process, or is rendered in liquid form that has to be drunk right out of the package. But on Mars, where there would be gravity, astronauts could actually cook their own food from “shelf-stable” ingredients.

The goal of the HI-SEAS study, run by investigators at the University of Hawaii at Manoa and Cornell University, has been to figure out the best strategies for nourishing Mars astronauts. On any long and isolated mission, especially on one as long as a hypothetical Mars mission. “menu fatigue” is a real danger. Astronauts need to consume a set amount of calories a day, otherwise they might lose body mass and bone density.

Lemon Dill Pasta Salad
Lemon Dill Pasta Salad

For the sake of testing the menu, the mission relied on a six-member crew of scientific-minded professionals who kept detailed logs of their food adventures. They filled out smell, taste, and appearance questionnaires for each meal; weighed each food item; tracked water consumption, cooking and cleanup time; and even monitored their sense of smell to see if food boredom had any physiological effects.

Another fun aspect was that they also tested crowdsourced recipes submitted by the public. Each recipe was limited to using the list of ingredients available. There was “Cajun Style Spam Jambalaya” and “Oatmeal Thickened Beef Stew” for dinner, “Blueberry Lemon Cornmeal Pancakes” for breakfast, and even a spicy veggie sushi as an appetizer.

"Dark Matter" cake
“Dark Matter” cake

Kate Greene, a science and technology journalist on the mission, had this to say about the menu:

I’ve enjoyed so many meals here, actually. A quinoa salad, breakfast tacos, borscht, beef tagine, and all the breads we make with our bread maker… We’ve also had cakes and puddings and pies, grilled cheese sandwiches and soups like seafood chowder.

With today’s technology, it could take as long as 300 days to even get there. But even with fully-stocked shelves, life on a Mars mission would still be a major challenge. In addition to fighting menu boredom, there was also the issue of regular boredom. Confined to their shelters and forced to wear space suits to go outside, the “astronauts” began to miss the everyday activities they used to take for granted.

hi-seas5As Greene indicated, she came to miss such things as walking about outside, biking, and swimming, and gained a new appreciation for her old life:

Something I realized about my day-to-day life on Earth is that it’s full of novelty. I see new people all the time and I go to different places. In the habitat, novelty has been a lot harder to come by, and it was subtle when I found it–a new recipe, a different way to arrange the furniture, or someone saying something completely out of character. When I noticed these slight changes, my joy and excitement was embarrassingly disproportionate.

On August 13th, Greene and her five colleagues emerged into the daylight without a spacesuit for the first time in months. After a media event and a debrief with the principal researchers on the NASA-funded project, they continued to sift through all of their research data, which ranged from scientific research, their food study, and even a record of their sleep cycles.

hi-seasmapAll of this information is likely to be very useful in coming years and decades. Back in August, on the one-year anniversary of the Curiosity Rover’s landing on Mars, NASA chief Charles Bolden said he believed that human footprints would follow in its path, and 2030 remains the projected date for putting those boots on the Red Planet.

Sources: fastcoexist.com, hi-seas.org

News From Space: Volcanic Eruption on Io!

Io.1Io, the innermost of Jupiter’s four largest moons, has always been a source of wonder for astronomers and scientists. In addition to its pockmarked and ashen surface, it is the most volcanically active object in the Solar System, with about 240 active regions. This is due to the immense tidal forces that Jupiter provides, which create oceans of lava beneath the surface and huge volcanoes blasting it hundreds of kilometers into space.

Naturally, these eruptions are not visible directly from Earth unless one is using infrared cameras. But recently, a new series of eruptions were observed by Dr. Imke de Pater, Professor of Astronomy and of Earth and Planetary Science at the University of California in Berkeley. She was using the Keck II telescope on Mauna Kea in Hawaii on August 15, 2013 when it immediately became apparent something big was happening at Io.

Io_eruptionIn a telephone interview with Universe Today, de Pater claims this eruption is one of the top 10 most powerful eruptions that have been seen on Io, and she just happened to have the best seat in the house to observe it.

When you are right at the telescope and see the data, this is something you can see immediately, especially with a big eruption like that. It is a very energetic eruption that covers over a 30 square kilometer area. For Earth, that is big, and for Io it is very big too. It really is one of the biggest eruptions we have seen.

However, the fact that it occurred in the Rarog Patera region of Io, aptly named for a Czech fire deity, is somewhat unusual. While many regions of Io are volcanically active, de Pater said she’s not been able to find any other previous activity that has been reported in the Rarog Patera area, which the team finds very interesting.

Galileo_IoAccording to Ashley Davies of NASA’s Jet Propulsion Laboratory in Pasedena, California, Rarog Patera was identified as a small, relatively innocuous hot spot by the Galileo spacecraft during its encounter with the Jovian moon during the late 90’s. However, the observations made indicated that the volcanic activity was at a level way, way below what was seen on Aug 15.

Though we cannot see the eruptions directly, observation using the Keck telescope in the past have ascertained there are likely fountains of lava gushing from volcanically active fissures. But unlike volcanic eruptions here on Earth, which are already awesome and frightening to behold, eruptions on Io would be roughly 1000 times as powerful.

And since Io has no atmosphere to speak of, and the planet’s mass is significantly less than that of Earth’s (0.015 that of Earth’s to exact), the lava shoots off into space. Thus, for anyone standing on the moon’s surface, the result would look very much like a space launch at night, with plumes of flames reaching from the ground and extending indefinitely into the sky.

Io_Earth_Moon_ComparisonAs de Pater further indicated in the course of her interview, volcanic activity remains quite unpredictable on the Jovian moon:

We never know about eruptions – they can last hours, days months or years, so we have no idea how long it will stay active. but we are very excited about it.

No data or imagery has been released on the new eruption yet since the team is still making their observations and will be writing a paper on this topic. One thing is clear at this point, though. Despite its mysterious nature, Io still has a few surprises left for Earth scientists.

And for more information on the mysterious planet of Io, check out this Astronomycast podcast, featuring an interview with Dr. Pamela Gay of Southern Illinois University:

http://www.astronomycast.com/2011/12/ep-244-io/

Source: universetoday.com, astronomycast.com

Space Elevators!

space_elevatorWhen it comes to classic and hard science fiction, there are few concepts more inspired, more audacious, and more cool than the Space Elevator. Consisting of a cable (or tether) attached the Earth near the equator and a station in geosynchronous orbit, a structure of this kind would allow us to put objects, supplies and even people into orbit without the need for rockets and space ships.

And perhaps I am a bit biased, seeing as how one of the writer’s featured in the Yuva anthology happens to have written a story that features one – Goran Zidar, whose story “Terraformers” includes an orbital colony that is tethered to the planet by a “Needle”. But I’ve found the concept fascinating for as long as I have known about it, and feel like its time for a conceptual post that deals with this most awesome of concepts!

Here goes…

History:
The first recorded example of the space elevator concept appeared in 1895 when Russian scientist Konstantin Tsiolkovsky was inspired by the Eiffel Tower in Paris. He considered a similar tower that extended from the ground into geostationary orbit (GSO) in space. Objects traveling into orbit would attain orbital velocity as they rode up the tower, and an object released at the tower’s top would also have the velocity necessary to remain in orbit.

space_elevator1However, his concept called for a compression structure, which was unfeasible given that no material existed that had enough compressive strength to support its own weight under such conditions. In 1959, another Russian scientist named Yuri N. Artsutanov suggested a more feasible proposal, a tensile structure which used a geostationary satellite as the base from which to deploy the structure downward.

By using a counterweight, a cable would be lowered from geostationary orbit to the surface of Earth, while the counterweight was extended from the satellite away from Earth, keeping the cable constantly over the same spot on the surface of the Earth. He also proposed tapering the cable thickness so that the stress in the cable was constant. This gives a thinner cable at ground level that becomes thicker up towards the GSO.

space_elevator_liftIn 1966, Isaacs, Vine, Bradner and Bachus, four American engineers, reinvented the concept under the name “Sky-Hook”. In 1975, the concept was reinvented again by Jerome Pearson, whose model extended the distance of the counterweight to 144,000 km (90,000 miles) out, roughly half the distance to the Moon. However, these studies were also marred by the fact that no known material possessed the tensile strength required.

By the turn of the century, however, the concept was revitalized thanks to the development of carbon nanotubes. Believing that the high strength of these materials might make an orbital skyhook feasible, engineer David Smitherman of NASA put together a workshop at the Marshall Space Flight Center and invited many scientists and engineers to participate. Their findings were published in an article titled “Space Elevators: An Advanced Earth-Space Infrastructure for the New Millennium”.

carbon-nanotubeAnother American scientist, Bradley C. Edwards, also suggested using nanotubes to create a 100,000 km (62,000 mile) paper-thin cable that would be shaped like a ribbon instead of circular. This, he claimed, would make the tether more resistant to impacts from meteoroids.  The NASA Institute for Advanced Concepts began supporting Edwards’ work, allowing him to expand on it and plan how it would work in detail.

In Fiction:
arthurcclarke_fountains-of-paradiseIn 1979, the concept of the Space Elevator was introduced to the reading public thanks to the simultaneous publications of Arthur C. Clarke’s The Fountains of Paradise (1979) and Charles Sheffield’s The Web Between the Worlds. In the former, engineers construct a space elevator on top of a mountain peak in the fictional island country of Taprobane, which was loosely based on Clarke’s new home in Sri Lanka, albeit moved south to the Equator.

In an interesting and fact-based twist, the purpose for building the elevator on Earth is to demonstrate that it can be done on Mars. Ultimately, the protagonist of the story (Dr Vannevar Morgan) is motivated by his desire to help a Mars-based consortium to develop the elevator on Mars as part of a massive terraforming project, something which has been proposed in real life.

Sheffield- The Web Between the WorldsSimiliarly, in Sheffield’s Web, which was his first novel, we see a world famous engineer who has created extensive bridge networks all over the world using graphite cable. In hoping to achieve the unachievable dream, he begins work on a space elevator code named the “Beanstalk”. This brings him into an alliance with a corrupt tycoon who wants to make rockets obsolete, and intrigue ensues…

Three years later, Robert A. Heinlein’s novel Friday features a space elevator known as the “Nairobi Beanstalk”. In Heinlein’s vision, the world of the future is heavily Balkanized, and people exist in thousands of tiny nation states and orbital colonies which are connected to Earth via the Beanstalk, which as the name suggests, is located in equatorial Africa.

ksr_redmarsIn 1993, Kim Stanley Robinson released Red Mars, a sci-fi classic that remains a quintessential novel on the subject of Mars colonization. In the novel, the Martian colonists build a space elevator that allows them to bring additional colonists to the surface, as well as transport natural resources that were mined planetside into orbit where they can be ferried back to Earth.

In 1999, Sid Meier’s, creator of the famed Civilization gaming series, released the sci-fi based Sid Meier’s Alpha Centauri that deals with the colonization of the planet “Chiron” in the Alpha Centauri system. In the course of the turn-based strategy game, players are encouraged to construct special projects as a way of gaining bonuses and building up their faction’s power.

One such project is the Space Elevator, which requires that the faction building first research the technology “super tensile solids” so they have the means of building a super-tensile tether. Once built, it confers bonuses for space-based unit production, allows orbital drop units to be deployed over the entire planet, increases production rates for satellites, and removes the need for aerospace facilities. spaceelevator_alpha_centauriIn David Gerrold’s 2000 novel, Jumping Off The Planet, we are again confronted with an equatorial space elevator, this time in Ecuador where the device is once again known as the “beanstalk”. The story focuses on a family excursion which is eventually revealed to be a child-custody kidnapping. In addition to this futuristic take on domestic issues, Gerrold also examined some of the industrial applications of a mature elevator technology.

Chasm_City_coverIn 2001, Alastair Reynolds, a hard sci-fi author and creator of the Revelation Space series, released Chasm City, which acted as a sort of interquel between the first and second books in the main trilogy. At the opening of the novel, the story takes place on Sky’s Edge, a distant world where settlers travel to and from ships in orbit using a space elevator that connects to the planetary capitol on the surface.

And in 2011, author Joan Slonczewski presented a biological twist on the concept with her novel The Highest Frontier. Here, she depicts a college student who ascends a space elevator that uses a tether constructed from self-healing cables of anthrax bacilli. The engineered bacteria can regrow the cables when severed by space debris, thus turning the whole concept of tensile solids on its head.

Attempts to Build a Space Elevator:
Since the onset of the 21st century, several attempts have been made to design, fund, and create a space elevator before the end of this century. To speed the development process, proponents of the concept have created several competitions to develop the relevant technologies. These include the Elevator: 2010 and Robogames Space Elevator Ribbon Climbing, annual competitions seeking to design climbers, tethers and power-beaming systems.

space_elevator_nasaIn March of 2005, NASA announced its own incentive program, known as the Centennial Challenges program, which has since merged the Spaceward Foundation and upped the total value of their cash prizes to US$400,000. In that same year, the LiftPort Group began producing carbon nanotubes for industrial use, with the goal of using their profits as capital for the construction of a 100,000 km (62,000 mi) space elevator.

In 2008, the Japanese firm known as the Space Elevator Association, chaired by Shuichi Ono, announced plans to build a Space Elevator for the projected price tag of a trillion yen ($8 billion). Though the cost is substantially low, Ono and his peers claimed that Japan’s role as a leader in the field engineering could resolve the technical issues at the price they quoted.

obayashi-2In 2011, Google was reported to be working on plans for a space elevator at its secretive Google X Lab location. Since then, Google has stated that it is not working on a space elevator. But in that same year, the first European Space Elevator Challenge (EuSEC) to establish a climber structure took place in August.

And in 2012, the Obayashi Corporation of Japan announced that in 38 years it could build a space elevator using carbon nanotube technology. Their detailed plan called for a 96,000 long tether, supported by a counterweight, that could hold a 30-passenger climber that would travel 200 km/h, reaching the GSO after a 7.5 day trip. However, no cost estimates, finance plans, or other specifics were made at this point.

space-elevator-schematics-largeDespite these efforts, the problems of building are still marred by several technical issues that have yet to be resolved. These include the problems of tensile strength, dangerous vibrations along the tether line, climbers creating wobble, dangers posed by satellites and meteoroids, and the fact that such a structure would be vulnerable to a terrorist or military attack.

Other Possibilities:
Though we may never be able to resolve the problems of building a space elevator on Earth, scientists are agreed that one could be made on other planets, particularly the Moon. This idea was first devised by Jerome Pearson, one of the concepts many original proponents, who proposed a smaller elevator that would be anchored by Earth’s gravity field.

LiftPort1This is a necessity since the Moon does not rotate and could therefore not maintain tension along a tether. But in this scenario, the cable would be run from the moon and out through the L1 Lagrangian point. Once there, it would be dangled down into Earth’s gravity field where it would be held taught by Earth gravity and a large counterweight attached to its end.

Since the Moon is a far different environment than planet Earth, it presents numerous advantages when building a space elevator. For starters, there’s the strength of the materials needed, which would be significantly less, thus resolving a major technical issue. In addition, the Moon’s lower gravity would mean a diminished weight of the materials being shipped and of the structure itself.

space_elevator_lunarAs Pearson explained:

[T]o lift a thousand tons per day off the lunar surface, it would take less than 100,000 tons of elevator to do it — which means it pays back its own mass in just 100 days, or somewhere between three and four times its own mass per year — which is not a bad rate of return… You don’t need nanotubes and very, very high strength materials. But the higher the strength, the more of the ratio you can get for hauling stuff on the moon.

In fact, LiftPort is already deep into developing a “Lunar Elevator”. Plans to build one by 2020 were announced back in 2010, and since that time, the company launched a Kickstarter campaign to get the funding necessary to conduct tests that will get them closer to this goal. These consisting of sending a tethered robot 2km from the surface to conduct stress and telemetry tests.

Ultimately, the company estimates that a Lunar Elevator could be made at the cost of $800 million, which is substantially less than a “Terran Elevator” would cost. Similarly, it is likely that any manned missions to Mars, which will include eventual settlement and plans to terraform, will involve a Martian elevator, possibly named the “Ares Elevator”.

Much like SpaceX’s attempts to resolve the costs of sending rockets into space, the concept of a space elevator is another means of reducing the cost of sending things into orbit. As time goes on and technology improves, and humanity finds itself in other terrestrial environments where resources need to be exported into space, we can expect that elevators that pierce the sky will become possible.

In the meantime, we can always dream…

space_elevator_conceptSources: en.wikepedia.org, gizmag.com, io9.com, forbes.com, universetoday.com, futuretimeline.com

New Movie Trailer: Europa Report

europa_reportOrdinarily, I like to show movie previews before the movie has been released. This time around, I’m a little behind the curve. But my thanks to Rami for bringing this movie to my attention, since it seems like just the thing for us sci-fi geeks and buffs. It’s called the Europa Report, a near-future speculative science fiction film that follows in the vein of the 2001: A Space Odyssey and the Blair Witch Project.

Taking place in 2061, the story follows a group of astronauts who are sent on a private venture to Jupiter’s moon of Europa to investigate it for signs of life. Naturally, things go wrong, lives are lost, and the footage of their mission becomes the basis of a “report” that people back at Earth pour over, hoping to find some answers to the mystery of what happened.

The film was officially released just under two weeks ago, on August 2nd, and has received some pretty kick-ass reviews. Over at space.com, they claimed the movie was “One of the most thrilling and realistic depictions of space exploration since Moon or 2001: A Space Odyssey”, while IO9’s Annalee Newitz wrote of the film:

The representations of Jupiter and Europa in this film come directly from real satellite imagery gathered by NASA, and the journey to Europa itself is both realistic and gorgeous. There’s a lesson here about how dramatic tension and brilliant concept design, even on an indie budget, can create a sense of wonder rivaling that of a VFX blockbuster. And the payoff at the end is electrifying.

Hot damn, that’s a good endorsement! As for me, and I imagine Rami, I plan to see it and offer a review of my own! A movie like this couldn’t be more timely. Already, long-term plans are being made to send a lander or a space penetrator to Europa to have a gander at what lies beneath its icy veil. And I look forward to the day when the reality of that planet and all the speculative fiction can get together and compare notes!

Source: IO9.com

News From Space: Eyes on Europa

europa-landerIt’s one of Jupiter’s four largest moons, named the Jovians by the famed astronomer – Galileo Galilee – who first discovered them. And from all outward appearances, the moon is an icy, inhospitable place, with surface temperatures never reaching above -160º C (-256º F). Yet, beneath that frozen outer shell is believed to be a liquid, saltwater ocean, one that draws warmth from its orbit around Jupiter.

If this should indeed be the case, then Europa would be about the best candidate for extraterrestrial life in the Solar System, albeit in microbial form. For decades now, NASA has been working under that assumption and preparing for the day that it might be able to send an expedition or probe to confirm it. And it now seems that that day may be on the horizon.

europa-lander-2According to NASA, this would likely take the form of a robot lander. Much like Curiosity, Opportunity, and other robotic research vehicles, it would packed with a variety of sensors and analytical equipment. But of course, the nature of that equipment would be specifically tailored to answer a series of unknowns pertaining to Europa itself.

Overall, the lander would have three priorities: discover the makeup of minerals and organic matter present on the moon; examine the geophysics of the ice and the ocean underneath; and determine how the geology looks (and therefore how it might have evolved) at a human scale on the surface. Basically, it would all boil down to looking at chemistry, water and energy – in other words, the conditions necessary for life.

And though NASA has not announced any official dates, it has begun to speak of the idea an indication of intent. A new article by NASA scientists published in the peer-reviewed journal Astrobiology entitled Science Potential from a Europa Lander set out their research goals in more detail, and speculated how they might be practically achieved.

europa-lander-4One area of focus would be Europa’s distinctive linear surface cracks which are believed to be the result of tidal forces. Europa’s eccentric orbit about Jupiter causes very high tides when the moon passes closest to the gas giant, so it is thought that this process would generate the heat necessary for simple life to survive. NASA thinks the cracks could contain biological makers, molecules indicating the presence of organic life, which have come from the ocean.

But of course, plotting a mission is not as simple as simply launching a robot into space. To ensure that such a mission would maximize returns requires that a “scientifically optimized” landing site be identified, and to do that, Europa’s surface must be thoroughly surveilled. Thus far, the little we know and think about Europa is based on a handful of flybys by Voyager 2 in the 70s and the Galileo probe in the 90s.

europa-lander-3Lead author Robert Pappalardo of NASA’s Jet Propulsion Laboratory summed up the situation as follows:

There is still a lot of preparation that is needed before we could land on Europa, but studies like these will help us focus on the technologies required to get us there, and on the data needed to help us scout out possible landing locations. Europa is the most likely place in our solar system beyond Earth to have life today, and a landed mission would be the best way to search for signs of life.

At the present time, NASA’s exploratory itinerary is quite packed. In addition to wanting to tow an asteroid closer to Earth to study it, launching two more rovers to Mars, constructing a settlement on the far side of the Moon, and conducting a manned mission to Mars, it’s safe to say that a robot lander on Europa won’t be happening for some time.

converted PNM fileBut of course, the plans are in place and moving forward with every passing year. NASA is certainly not going to pass up a chance to examine one of the Solar Systems best candidates for extra-terrestrial life, and we can certainly expect more deep-space probes to be launched once Cassini is finished shooting pictures of Saturn.

I am willing to bet good money that any future probe sent into the outer reaches of the Solar System will be tasked with taking high-resolution photos of Europa as part of its mission. And from that, we can certainly expect NASA, the ESA, and even the Chinese, Russians and Indians to start talking turkey within our lifetimes.

What do you think? 2035 seem like a safe bet for a Europa lander mission?

Source: gizmag.com

100,000 People Want to Go to Mars, And Not Come Back

MarsOneEver since they announced their plan to establish a colony on Mars by 2022, Mars One has been flooded by applicants eager to set foot on a new planet and make it their home. In fact, according to a recent story by CNN Tech, over 100,000 people have volunteered for the mission, knowing full well that it would be a one-way trip and their stay on the Red Planet would be permanent.

Anyone who is 18 years of age or older can apply, and the fee runs anywhere from $15 to $38, depending on your nationality and the gross domestic product of your country. Ultimately, only 40 people will be selected this year, and only two couples will be sent ahead with the first mission. This mission is slated to leave by September of 2022 and land on Mars by April of 2023, with another group of four to be sent two years later.

Mars_landerThe applicants can all be seen simply be going to their website, where each person has created a profile and can be voted on. According to Bas Lansdorp, co-founder and CEO of Mars One, only those who have completed the registration process can be seen here:

There is also a very large number of people who are still working on their profile, so either they have decided not to pay the application fee, or they are still making their video or they’re still filling out the questionnaire or their resume. So the people that you can see online are only the ones that have finished and who have set their profiles as public.

In terms of what the selectees will do once the project is up and running, the website offers a basic rundown. First, the volunteer astronauts will undergo a required eight-year training in a secluded location, where they will learn how to repair habitat structures, grow vegetables in confined spaces and address “both routine and serious medical issues such as dental upkeep, muscle tears and bone fractures.”

mars-one-brian-versteegIn terms of how settlement will occur, the plan is to send a series of Mars One landers equipped with up to 2500 kg (5,500 pounds) of food, solar panels and supplies each. After eight missions, more than 44,000 pounds of supplies and 40 people will have arrived and the capsules themselves will be formed into the settler’s habitat.

Two things Earth won’t be sending is water and oxygen, since the settlers will be manufacturing these themselves. According to Lansdrop, these will be manufactured on Mars:

We will evaporate it and condense it back into its liquid state. From the water we can make hydrogen and oxygen, and we will use the oxygen for a breathing atmosphere inside the habitat. This will be prepared by the rovers autonomously before the humans arrive.

mars_astronautsNaturally, a good many details, such as where the $6 billion dollars for the first mission are going to come from, whether or not the technology truly exists to create a self-sustaining colony on Mars, and whether the people going up will be able to survive for extended periods of time until new waves arrive and new settlements are opened up.

In addition, there are experts who say that the risks are too high given the distance and exposure to radiation involved. A round-trip journey to Mars could expose astronauts to the maximum amount of radiation allowed in a career under current NASA standards. While Mars One does not negate this issue, they have yet to indicate how they intend to keep their astronauts shielded from the harmful cosmic rays.

mars_astronauts1However, this has not deterred some 30,000 Americans and over 100,000 people worldwide from signing on. What’s more, Lansdrop has said repeatedly that the project will be funded by sponsors and media that will pay for broadcasting rights of shows and movies documenting everything from the astronauts’ training on Earth to their deployment and colonization of Mars.

Basically, they intend for the entire process to be a worldwide media event, a massive reality TV show, with the necessary advances and funding worked out as time goes on. Right now, all they are looking for is volunteers so that corporate and media sponsors understand just how serious this is and that the willingness to go is there. No telling if that will be enough, but it is a start.

tito-mars-mission-conceptWhat’s more, Mars One is not alone in trying to make a trip to the Red Planet a reality. The Inspiration Mars Foundation is another such private venture, which is seeking to send a couple on a 501-day, round-trip journey aboard a space craft that will take then to Mars and back in 2018 without ever touching down on the surface.

Here too, the issue of funding, the technology involved, and the problem of radiation shielding are all being considered and ironed out in an ongoing manner, with some rather interesting possibilities being considered (such as using human feces and waste plumbing to shield the astronauts from radiation!)

spacecraft_marsUltimately, it seems that certain private ventures are not willing to wait for NASA’s planned 2030 excursion to Mars before general settlement and terraforming can begin. And though it may prove unfeasibly by the time frames being proposed, the excitement and desire to make things happen sooner than projected are understandable.

And as Lansdorp explains, much of the project has to do with telling a story, perhaps the greatest ever told:

What we want to do is tell the story to the world. When humans go to Mars, when they settle on Mars and build a new Earth, a new planet. This is one of the most exciting things that ever happened, and we want to share the story with the entire world.

For the full CNN story, plus video of the interview with the Mars Society, follow the link below:

http://www.cnn.com/video/data/2.0/video/world/2013/04/22/w1-mission-to-mars-willett.cnn.html

And be sure to check out Mars One promotional video:


Sources: cnn.com, mars-one.com, applicants.mars-one.com

News From Space: 3D Printer Bound for ISS!

made-in-space-3d-printerThe International Space Station has plans to bring a 3D printer on board by 2014. And yesterday, the model in question – the startup’s Made in Space engineering model – passed an important milestone on its way into orbit. This consisted of a battery of tests at NASA’s Marshall Space Flight Center in Huntsville, Ala., which confirmed that the machine can survive the rigors of launch and function in space.

Michael Snyder, director of research and development at Made in Space, said in a statement that:

This developmental testing was vital to the design of our flight-unit printer. We’ve engaged in a fast-paced mission starting in early 2013 to produce hardware that NASA would qualify for launch and installation to the ISS in 2014. The fact that we’ve been able to pass another milestone in an abbreviated time frame is extremely exciting.

For some time, NASA has had its eye on additive manufacturing (aka. 3D printing) as a means of making space travel cheaper and more efficient. In addition to the development a 3D pizza maker and food printing, NASA also hopes to equip future ships and stations with their own printer so crews can generate spare parts and components, rather than having to mount costly resupply missions.

3DpizzaMade in Space and NASA Marsall hope to jump-start this vision with their “3D Printing in Zero Gravity” experiment (3D Print for short) which  aims to launch the first-ever 3D printer to the space station in August 2014. But before that can happen, the machine must pass some more rigorous tests. The first occurred several months ago when three prototype versions of Made in Space’s printer passed a series of microgravity tests during parabolic airplane flights.

This flight test, known colloquially as the “vomit comet”, demonstrated that the prototypes could indeed handle working in microgravity environments. The more recent tests at Marshall, performed with the company’s Engineering Test Unit (ETU), ensured that the printer can survive the vibrational stresses of launch and deal with electromagnetic interference, among other issues.

3d-printer-microgravity-flight-testData from these tests will inform the critical design review of the flight unit prototype, a big step toward clearing the machine for launch toward the space station. According to Made in Space officials, the final review process is slated for the 15th of August. Niki Werkheiser, 3D Print project manager in Marshall’s Technology Development and Transfer Office, also said in a statement that:

The successful results received from the ETU testing at [Marshall] reinforces our confidence that Made in Space, Inc. has developed the robust design required to successfully print in space. We are excited to have successfully completed yet another key step toward meeting the extensive ISS flight certification process.

If all goes well, it won’t be long before the crew of the ISS is able to regularly print out all the replacement parts they need. Given time, they might even solve the problem of what to do when freeze-dried food won’t cut it and you absolutely must have a slice of pizza!

Source: space.com

Climate Crisis: NASA’s Projected Changes

NASA_global_warming_predAs the world’s foremost space agency, NASA has been at the forefront of climate research for many decades. Their contributions to this field of science has helped to shape our understanding of the planet’s past and has led to our current understanding of the Greenhouse Effect, Global Warming, and Climate Change. As a result, they are committed to educating the public about what’s in store for our blue planet in the near future.

Below are two videos that were recently released by NASA’s Goddard Space Flight Center. Both briefly, but succinctly, provide visualizations of what an average temperature increase of up to 5.5 Celsius (8 degrees Fahrenheit) and the resulting effect on weather patterns would look like, which is expected to happen by the end of the 21st century.

These visualizations – which highlight computer model projections from the draft National Climate Assessment – show how average temperatures and precipitation patterns could change across the U.S. in the coming decades under two different scenarios. As you can see, both predict significant warming and drying as a result of increased concentrations of CO2 in the upper atmosphere.

Projected Temperature Change by 2100:


Projected Precipitation Change by 2100:


The visualizations, which combine the results from 15 global climate models, present projections of temperature and precipitation changes from 2000 to 2100 compared to the historical average from 1970 -1999. They were produced by the Scientific Visualization Studio at NASA’s Goddard Space Flight Center, Greenbelt, Md., in collaboration with NOAA’s National Climatic Data Center and the Cooperative Institute for Climate and Satellites, both in Asheville, N.C.

Speaking on the subject of these videos, Allison Leidner, Ph.D. – a scientist who coordinates NASA’s involvement in the National Climate Assessment – said:

These visualizations communicate a picture of the impacts of climate change in a way that words do not. When I look at the scenarios for future temperature and precipitation, I really see how dramatically our nation’s climate could change.

But of course, these visualizations only tell part of the story. Far from this being a geographically restricted phenomena, residents inside the US are likely to be less severely hit than those people living in Sub-Saharan Africa, the Mediterranean, the Middle East, Central Asia, India and East Asia, where the problems of flooding, water loss, famine and drought area already common.

Add to this flooding coastlines, invasive parasites and diseases, militarized borders, potential skirmishes over dwindling resources, and a refugee crisis the likes of which the world has never seen, and you get a pretty good idea of why this issue matters as much as it does. The next century is going to be an interesting time. Here’s hoping we survive it!

Source: nasa.gov