Tag: astronauts

The Future of Computing: Towards a Quantum Internet

quantun_internetFor decades, the dream of quantum computing – a system that makes direct use of quantum-mechanical phenomena, such as superposition and entanglement, to perform operations on data- has been just that. Much the same is true of principles that expand on this concept, such as quantum encryption and a quantum internet. But thanks to ongoing studies and experiments by researchers and scientists, that dream may be closer to fruition than ever.

This time the progress comes from a research team out of Professor Nicolas Gisin lab’s in the physics department at the University of Geneva. The team achieved the teleportation of the quantum state of a photon – this time, the photon’s polarization – to a crystal-encased photon more than 25 kilometers (15.5 miles) away. The distance breaks the previous record of 6 kilometers (3.7 miles) set 10 years ago by the same team using the same method.

quantum_crystalThis is the latest in a series of experiments the group, led by physicist Félix Bussières, have conducted over the last decade in an effort to better understand quantum data transfer. In this particular experiment, the researchers stored one photon in a crystal, essentially creating a solid-state memory bank. They sent another photon of a different wavelength 25 km away through optical fiber, whereupon they had it interact with a third photon.

Because the first two photons were entangled – a quantum property whereby particles can speak to each other across an infinite distance – the interaction sent the data to the photo stored in the memory bank, where the team was able to retrieve it. Or as the team explained, using pool balls as an anology:

It is a bit like a game of billiards, with a third photon hitting the first which obliterates both of them. Scientists measure this collision. But the information contained in the third photon is not destroyed – on the contrary it finds its way to the crystal which also contains the second entangled photon.

quantum-entanglement3This is all in keeping with the concept of quantum teleportation – the moving of quantum data from one location to another without having to travel the distance between them. That means that the speed at which data moves isn’t necessarily limited by the constraints of space and time. In that sense, it’s easier to think of this kind of teleporting not as a “beam me up” scenario, but as a kind of instantaneous awareness between two points.

While this may not sound as exciting as Ursula K. Le Guin’s Ansible communicator, the Alcubierre warp drive, or the “Star Trek”-style transporter, it opens up startling possibilities. For instance, in addition to bringing us closer to hard drives that can store quantum bits (aka. qubits), this is a major step in the direction of a quantum internet and encryption- where information is sent around the world instantaneously and is extremely secure.

quantum-teleportation-star-trails-canary-islands-1-640x353This also opens doors for space exploration, where astronauts in space, rovers on Mars, and satellites in deep space will be able to communicate instantly with facilities here on Earth. For non-quantum physicists, the novel aspect of this experiment is that the team achieved teleportation of data across the kind of optic fiber that forms the basis of modern-day telecommunications, which means no major overhaul will be needed to make quantum internet a reality.

As physicists continue to push the boundaries of our understanding about the quantum world, we’re getting closer to translating these kinds of advancements in market applications. Already, quantum computing and quantum encryption are making inroads into the sectors of banking security, medical research and other areas in need of huge computing muscle and super-fast information transfer.

^With the rise of a potential quantum Internet on the horizon, we could see the next jump in communication happen over the next couple of decades. So while we’re a long way off from trying to pry quantum teleportation and entanglement from the grip of the theoretical realm, scientists are making headway, if only a handful of kilometers at a time. But every bit helps, seeing as how routing stations and satellites can connect these distances into a worldwide network.

In fact, research conducted by other labs have not only confirmed that quantum teleportation can reach up to 143 km (89 miles) in distance, but that greater and greater properties can be beamed. This distance is especially crucial since it happens to be close to what lies between the Earth and a satellite in Low-Earth Orbit (LEO). In short, we humans could construct a quantum internet using optic cables or satellites, mirroring the state of telecommunications today.

And when that happens, get ready for an explosion in learning, processing and information, the likes of which has not been seen since the creation of the printing press or the first internet revolution!

Sources: cnet.com, technologyreview.com, nature.com

Buzz Aldrin: Let’s Go to Mars!

Apollo11_Aldrin1This past weekend was the 45th anniversary of the Moon Landing. To mark that occasion, NASA mounted the @ReliveApollo11 twitter campaign, where it recreated every moment of the historic mission by broadcasting updates in “real-time”. In addition to commemorating the greatest moment in space exploration, and one of the greatest moments in history, it also served to draw attention to new efforts that are underway.

Perhaps the greatest of these is one being led by Buzz Aldrin, a living-legend and an ambassador for current and future space missions. For decades now, Aldrin has been acting as a sort of elder statesman lobbying for the exploration of the cosmos. And most recently, he has come out in favor of a mission that is even grander and bolder than the one that saw him set foot on the Moon: putting people on Mars.

mars_spaceXmissionIt’s no secret that NASA has a manned mission planned for 2030. But with space exploration once again garnering the spotlight – thanks in no small part to commercial space companies like SpaceX and Virgin Galactic – Aldrin is pushing for something even more ambitious. Echoing ideas like Mars One, his plan calls for the colonization of Mars by astronauts who would never return to Earth.

To be sure, the spry 84 year-old has been rather busy in the past few years. After going through a very public divorce with his wife 0f 23 years in January of last year, he spent the past few months conducting a publicity blitz on behalf of the 45th anniversary of Apollo 11. In between all that, he has also made several appearances and done interviews in which he stressed the importance of the Martian colonization project.

Mars_OneA few months ago, Aldrin wrote an op-ed piece for Fast Company about innovation and the need for cooperation to make a new generation of space exploration a reality. During a more recent interview, which took place amidst the ongoing crisis in the Ukraine, he once again stressed the importance of cooperation between the United States, Russia, China, and their respective space programs.

As he told Fast Company in the interview:

I think that any historical migration of human beings to establish a permanent presence on another planet requires cooperation from the world together. That can’t be done by America competing with China… Just getting our people back up there is really expensive! We don’t compete but we can do other things close by with robots, which have improved tremendously over the past 45 years (since Apollo 11). You and I haven’t improved all that much, but robots have. We can work together with other nations in design, construction, and making habitats on both the near side and far side of Mars. Then when we eventually have designs, we’ll have the capacity to actually build them.

SLS_launchSimilarly, Aldrin took part in live Google Hangout with Space.com’s managing editor Tariq Malik and executive producer Dave Brody. This took place just eight days before the 25th anniversary of the Landing. During the broadcast, he discussed his experiences as an astronaut, the future of lunar exploration, future missions to Mars and beyond, and even took questions via chatwindow on Google+’s webpage.

At this juncture, its not clear how a colonization mission to Mars would be mounted. While Mars One is certainly interested in the concept, they (much like Inspiration Mars) do not have the necessary funding or all the technical know-how to make things a reality just yet. A possible solution to this could be a partnership program between NASA, the ESA, China, Russia, and other space agencies.

terraformingSuch ideas did inform Kim Stanley Robinson’s seminal novel Red Mars, where an international crew flew to the Red Planet and established the first human settlement that begins the terraforming process. But if international cooperation proves too difficult, perhaps a collaboration between commercial space agencies and federal ones could work. I can see it now: the Elon Musk Martian Dome; the Richard Branson Habitat; or the Gates colony…

With that in mind, I think we should all issue a prayer for international peace and cooperation! And in the meantime, be sure to check out the video of the Google Hangout below. And if you’re interested in reading up on Aldrin’s ideas for a mission to Mars, check out his book, Mission to Mars: My Vision for Space Exploration, which is was published by National Geographic and is available at Amazon or through his website.


Sources: fastcompany.com, buzzaldrin.com, space.com

Forty-Fifth Anniversary of Apollo 11

Apollo11_launch1Today, July 20th, marks the 45th anniversary of the first step being taken on the Moon. And even though the coming decades may involve astronauts setting foot on Mars or a nearby asteroid, the Moon landing will forever remain one of humanity’s greatest accomplishments. And the many speeches, footage and images associated with the mission remain firmly rooted in public consciousness.

Born during the closing months of the Eisenhower administration as a follow-up to Project Mercury – which successfully put astronauts into orbit – Project Apollo was conceived when spaceflight was still very much in its infancy. However, it was under President Kennedy that the goal of “landing a man on the Moon and returning him safely to the Earth” by the end of the decade truly began.

kennedy_moonspeechAnd though some within NASA were already doing some preliminary planning for a manned mission to the Moon in the late 1950s, there was no hardware that could see the mission fly, no rockets large enough to launch a manned spacecraft all the way to the Moon, and no provisions for managing a program of that magnitude. The men and women who brought the lunar landing to fruition were forced to invent almost everything as they went along.

And in the nine years between President Kennedy promising America the Moon and Neil Armstrong’s small step, NASA developed an unprecedented amount of technology and know-how that continues to shape the way NASA and other space agencies plan and implement missions today. These include the Saturn V multistage rockets, which are currently being refurbished for a manned mission to Mars by 2030.

Apollo_11Launching on from Cape Kennedy on the morning of July 16th, 1969, the mission sent Commander Neil Armstrong, Command Module Pilot Michael Collins and Lunar Module Pilot Edwin “Buzz” Aldrin into an initial Earth-orbit. Then, just two hours and 44 minutes after launch, another engines burn put Apollo 11 into a translunar orbit. Four days later, the Lunar Module touched down and the three men – with Armstrong in the lead – stepped onto the Lunar surface.

And for those looking to participate in the anniversary, there are several ways you can participate. On Twitter, @ReliveApollo11 from the Smithsonian National Air and Space Museum is reliving the highlights from Apollo 11 mission to the Moon in “real time”. Also, @NASAHistory is tweeting images and events from the mission, and journalist Amy Shira Teitel (@astVintageSpace) is tweeting pictures, facts and quotes from the mission, again in “real time”.

apollo11_flag2At 7:39 p.m. PDT (10:39 p.m. EDT), when Armstrong opened began the first spacewalk on the Moon, NASA TV will replay the restored footage of Armstrong and Aldrin’s historic steps on the lunar surface. On Monday, July 21 at 7 a.m. PDT (10 a.m. EDT) NASA TV will be broadcasting live from Kennedy Space Center in Florida, where they will be renaming the center’s Operations and Checkout Building in honor of Armstrong, who passed away in 2012.

The renaming ceremony will include NASA Administrator Charles Bolden, Kennedy Center Director Robert Cabana, Apollo 11′s Collins, Aldrin and astronaut Jim Lovell, who was the mission’s back-up commander. International Space Station NASA astronauts Wiseman and Steve Swanson, who is the current station commander, also will take part in the ceremony from their orbiting laboratory 260 miles above Earth.

Apollo_11_bootprintOn Thursday, July 24 at 3 p.m. PDT (6 p.m. EDT), which is the 45th anniversary of Apollo 11′s return to Earth, the agency will host a panel discussion – called NASA’s Next Giant Leap – from Comic-Con International in San Diego. Moderated by actor Seth Green, the panel includes Aldrin, NASA Planetary Science Division Director Jim Green, JPL systems engineer Bobak Ferdowsi, and NASA astronaut Mike Fincke.

In addition to Aldrin recounting his experiences, Fincke and the other NASA staff are slated to talk about the new Orion space capsule and the Space Launch System rocket – both of which will carry humans on America’s next great adventure in space – and what the future holds for space exploration. These will no doubt include talk of the planned missions to an asteroid, Mars, and quite possibly the construction of a settlement on the Moon.

apollo11_flag1The NASA.gov website will host features, videos, and historic images and audio clips that highlight the Apollo 11 anniversary, as well as the future of human spaceflight. You can find it all by clicking here. And if you don’t have NASA TV on your cable or satellite feeds, you can catch it all online here. Plenty has been happening already, marking the anniversary of the launch and recapturing the mission in “real-time”.

Forty five years later, and Apollo 11 still holds a special place in our collective hears, minds, and culture. One can only hope that the next generation of astronauts prove as equal to the task as those who made the Moon Landing were. And I’m sure that when they do make history, Neil Armstrong (may he rest in peace) will be watching approvingly.

And be sure to check out this video from Spacecraft Films, showing the entire Apollo 11 mission in 100 seconds:


Sources: universetoday.com, motherboard.vice.com, nasa.gov, spacecraftfilms.com

News From Space: Cold War Chill Returning to Space

Space_race1[2]It’s no secret that relations between the US and Russia have been strained due to the latter’s recent military activities in Crimea. And now, it appears that Russia is using their space program as leverage in their ongoing fight over sanctions. Back in April, NASA announced that collaboration with Roscosmos – Russia’s Federal Space Agency – had ended for the time being. Since then, an escalating war of words and restrictions have followed.

For instance, in the past months, the U.S. has restricted communication between some American scientists and their Russian colleagues as part of their protest against Crimea. In response, Dmitry Rogozin – Deputy Prime Minister and head of the Russian Military-Industrial Commission – said on his Twitter feed that he is restricting the export to the US of Russia’s RD-180 rocket engines, for uses that do not involve the U.S. military – a move which has temporarily grounded all US military satellites from being deployed into orbit.

NASA_trampolineMr. Rogozin also posted an image of a trampoline with a big NASA logo in the centre, saying that after 2020 it is the technology U.S. astronauts will need to use get to the International Space Station. One week later and in response, NASA Administrator Charles Bolden said that the cooperation between NASA and Roscosmos on the International Space Station hadn’t changed “one iota” in recent years, and has withstood the increasingly frosty atmosphere between Washington and Moscow over the events in the Crimea and Ukraine.

Still, Bolden indicated that if for one reason or other a country should drop out of the project, the others would seek to continue. But in the meantime, this would means the US would lose its capacity to put its own spy and military satellites into orbit, the future of the International Space Station (ISS) would be uncertain. In addition to the US, Japan, Europe and Canada are also members of the ISS and all currently depend on Russian Soyuz capsules to take astronauts to the space station since NASA retired its shuttle fleet.

International-Space-Station-ISS-580x441All in all, it is a sad state of affairs, and not just because of the repercussions to space exploration and scientific research. As a product of post-Cold War co-operation, the ISS cost $100 billion to create and was arguably the most expensive multinational peacetime undertaking in history. Now, it is being threatened because the two nations that came together to make it a reality are regressing into a state of Cold War detente. And though the Russians currently feel that they have the upper hand, the long-term reality is far different.

Back in the early 1990s, both the U.S. and Russian space programs were floundering. The Russian program was running broke because of the collapse of the Soviet Union, and the U.S. was operating a space shuttle program that was proving to be more expensive than promised. The Americans were also having difficulty finding support for their Freedom space station project, which had a budget that was also ballooning upwards, and the Russian’s weren’t sure how much longer Mir would remain in operation.

Earth_&_Mir_(STS-71)Both countries agreed the only way to keep their space programs alive and build a large space station was to share the costs and technology, which also allowed other countries from Europe, as well as Japan and Canada, to participate. In the 13 years since it has been occupied, the International Space Station has literally known no borders, as astronauts from dozens of nations have participated in missions that have had wide-ranging benefits.

And in the process, Russia has benefited greatly in financial terms as the US has paid tens of millions of dollars to have American astronauts fly aboard the former space station Mir and ride along on their Soyuz rockets. If this friendly arrangement breaks down, it will cost both countries dearly. Russia will lose all that income from the sale of its space technology, and the U.S. will have to accelerate the development of its own space capsules and rockets to launch people and satellites into space from American soil.

dream_chaserStanding on the sidelines are individuals and private companies like Elon Musk and SpaceX, the Texas company that already builds its own low-cost rockets, along with space capsules that have been delivering supplies to the Space Station. In addition, Sierra Nevada, a private aerospace contractor, is working with NASA to produce the Dream Chaser as part of the agency’s reusable vertical-takeoff, horizontal-landing (VTHL) program.

Between SpaceX already delivering capsules to the ISS, its successful reusable rocket demonstrations, and the multiple proposals NASA has for a new era of space vehicles, the US space program may not be grounded for much longer. And there is something to be said about competition spurring innovation. However, one cannot deny that it is unfortunate that the US and Russia may be once again moving forward as competitors instead of companions, as that is likely to cost all sides far more.

But of course, there is still plenty of time for a diplomatic solution to tensions in the east, and plenty of reasons for all sides to avoid regressive to a Cold War footing. We’ve come too far at this point to turn back. And considering how much of our future depends on space travel and exploration going ahead unimpeded, we can’t afford to either!

Sources: cbc.ca, phys.org

Food From Space: NASA’s 3-D Pizza Printer (Cont’d)

3DpizzaLast Spring, NASA made headlines when it announced that its was granting a developer $125,000 to build a prototype 3-D food printer that would be able to create pizzas and other tasty food items. This is part of NASA’s larger effort to bring 3-D printing into space so that astronauts could meet their nutritional and supply needs on site.

And according to this most recent video, courtesy of Anjan Contractor, it seems that the project had begun to bear fruit. Contractor is the lead engineer behind the printer design, and was employed by NASA’s Systems & Materials Research Corporation to complete a printer that could provide astronauts a nutritious, comforting alternative to the canned and freeze-dried prepackaged foods they’re currently stuck with.

3-D_pizzaAs you can see from the video, the machine does a pretty good job of creating a rectangular, margherita pizza – albeit with some minor spillage. And, according to Contractor, the device takes about 70 seconds to cook the pizza after the printer nozzles were finished laying down the liquid crust-precursor, followed by the tomato sauce and liquid cheese.

If NASA decides it wants to move ahead with the printer, it will still be many, many years before astronauts are eating 3-D printed pizza and other such delectables in space. But this proof of concept is a major step in that direction, and NASA is likely to see its project through to completion before attempting any long-range missions (such as to Mars).

After all, astronauts being in space for extended periods of time is the very reason alternatives are being contemplated in the first place. And in the meantime, check out this video of Contractor’s printer as it generates a pizza:


Source: fastcoexist.com

News From Space: Olympic Torch gets a Spacewalk

sochi_torch_ISS1Yesterday, for the first time ever, the Olympic torch was taken into space as two Russian cosmonauts took it on a spacewalk outside of  the International Space Station. NASA streamed video of the event as two cosmonauts, Oleg Kotov and Sergei Ryazanskiy, conducted their walk while the torch bobbed weightlessly from the end of a tether.

The two cosmonauts took several photos with the torch hovering with planet Earth in the background, the orb’s edge capturing the sunrise and emitting a bright glow. After two hours, they returned it to the space station and got to other tasks on their itinerary, which included attaching a footrest and a camera platform to the exterior of the orbiting laboratory.

The Soyuz TMA-11M spacecraft rests on its launch pad at the Baikonur cosmodromeThe walk was just latest leg in the torch’s journey, which began on October 7th when the torch was delivered from Greece to Moscow. After touring the country, a journey which took it from Moscow, to St. Petersburg, and even to the North Pole (another first) aboard an atomic-powered icebreaker, the torch was launched last Thursday aboard a Soyuz rocket from the Baikonur Cosmodrome.

Inspired by the Firebird of Russian folklore, a magical glowing birdt hat can be both a blessing and a curse to its owner, the metre-long torch – which weighs roughly 2 kg (4.4 lbs) on Earth – accompanied a three-man crew into space. This consisted of a Russian cosmonaut and an American and Japanese astronaut, bringing the total number of crew aboard the station to nine.

Space-Shuttle-Atlantis-STS-101-031.previewGranted, this is not the first time an Olympic torch has been taken into space. In 1996 and again in 2000, the Atlanta and Sydney Olympic torches were flown into space aboard the U.S. Space Shuttle Atlantis, in preparation for the Atlanta Summer Olympics. However, in that case, the torch was not taken outside of the spacecraft, which makes this a true first.

Much like on that occasion, the torch remained unlit while it was in space, as lighting it would have consumed precious oxygen. Still, the ISS crew managed to carry the unlit torch with them on a tour through several of the station’s modules and snapped pictures of it all. This took place over the course of several days before it stepped into space on Saturday.

sochi_torch_ISS4The torch is set to return to Earth tomorrow along with Russian cosmonaut Fyodor Yurchikhin, U.S. astronaut Karen Nyberg and Italian Luca Parmitano of the European Space Agency. Once home, it will be handed off to Sochi 2014 officials and continue on its 65,000 kilometer (44,000 mile) journey, which just happens to be the longest Olympic torch relay in history.

The torch is also planned to reach such destinations as Mount Elbrus (Europe’s highest peak) in the Caucasus mountain range before arriving in Sochi on February 7th, where it will kick of the 22nd Winter Games. In another interesting first, this will be the first time that an Olympic Games has been held by the Russian Federation, whereas the 1980 Summer Olympics that were held in Moscow took place during the era of the Soviet Union.

Olympic torch launched into spaceAccording to Deputy Prime Minister Dmitry Kozak, who has been in charge of planning the Olympics, transporting the Olympic torch to the ISS and bringing it into space is seen as “[A] way to show the world what Russia is made of.” He said it would display Russia’s “might” and its economic achievements, not unlike China did with the Tiangong space station.

Though the upcoming games are still a source of controversy to many – due to the recent passage of several laws that criminalize what officials call “gay propaganda” – this latest part of the Sochi Olympic torch relay showcases what is truly great about the Olympics. Not only was it an historic first, it also reminds us what the Olympics are all about.

sochi_torch_ISS5Originally conceived as a way of fostering goodwill between Greece’s city-states, and resurrected in 1894 to foster goodwill between nation-states, bringing the torch on board the ISS amidst a crew of international scientists helps to celebrate the spirit of diversity and tolerance which can and must define our modern world.

One can only hope that the symbolic value of this has not been lost on Russian lawmakers. Take it from us, Putin and the State Duma of Russia. It’s not too late to rethink your country’s political stances. If you really want to show how far your country has come, why not do some incredibly rational, like back away from an incredibly antiquated legal stance? I know for a fact it would make the Olympics go more smoothly this coming February…

And of course, be sure enjoy this video that NASA captured during the spacewalk:


Sources: cbc.ca, (2), ctvnews.ca, abcnews.go.com, in.reuters.com

Apocalypse News: Sun’s Magnetive Field about to Flip

sun_magneticfieldThe sun is set to reverse its polarity in the next few months, something that occurs at the height of every Solar Cycle. The resulting ripple effect will be felt all across the Solar System and will even be detectable by the far-away Voyager probes. However, scientists are telling us not to fret, as this event will not lead to the end of the world.

In truth, the Sun’s reversal of polarity is something that occurs every 11 years. And the shift won’t spark an increase in powerful solar storms or other events that could have a damaging effect on Earth and its inhabitants, say the researchers. One such researcher is Phil Scherrer, a solar physicist at Stanford University, who insisted “The world will not end tomorrow.”

NASAsolar_radiationIn addition, from a human perspective, the effects of the field shift will likely be slight and even beneficial. For example, the polarity reversal will cause the “current sheet” – an enormous surface extending out from the solar equator on which the sun’s rotating magnetic field has induced an electric current – to become much wavier.

This crinkled current sheet, in turn, will provide a better barrier against galactic cosmic rays, high-energy particles that are accelerated to nearly the speed of light by faraway star explosions. Galactic cosmic rays can damage spacecraft and hurt orbiting astronauts who don’t get to enjoy the protection of Earth’s thick atmosphere. So for space exploration, at any rate, this is certainly good news.

Sun's Heliospheric-current-sheetAccording to Todd Hoeksema, director of Stanford’s Wilcox Observatory, a drop in galactic cosmic ray levels could also have a subtle impact on weather here on Earth.

One of the things that helps clouds form and lightning to flash is cosmic-ray ionization of things in the Earth’s atmosphere. So when the cosmic-ray intensity is lower, it means you have fewer places where lightning will occur, and so the storms will probably be a little less intense.

He added, however, that it’s pretty much a speculative endeavor at this point, as no conclusive link has ever been demonstrated between cosmic rays and the weather.

In any case, during a reversal, the sun’s polar magnetic fields weaken all the way down to zero, then bounce back with the opposite polarity. Researchers will keep a keen eye on just how strong this recovery is over the next two years or so. The sun has been quiet during its current 11-year activity cycle, which is known as Solar Cycle 24. So it would be particularly interesting to see a strong field emerge after the impending flip.

sun_magneticfield1Dean Pesnell, a project scientist for the space agency’s Solar Dynamics Observatory spacecraft at NASA’s Goddard Space Flight Center, the Sun’s latest field is likely to be a good indicator of what the next solar cycle is going to do. During its most recent cycle, known as Solar Cycle 24, the sun was rather quiet, so what happens next ought to be interesting:

If it quickly goes to a high value, then that tells us the next cycle will be high. We’ve had several of these solar minimums, and each time the polar field has been weaker. And each time, the next cycle has been a little bit weaker. So it would be nice to see one where the polar field strength was higher, and the next cycle was higher as well.

So rest easy, folks. No apocalyptic scenarios are likely to result from this latest, all-too-common solar phenomena. If anything, it will provide research benefits for scientists and aid in space exploration – especially for companies looking to mount missions to Mars in the next 11 years and trying to figure out a way around that tricky radiation problem.

As for the rest of us, we’re likely to maybe get a little break on the weather front. Maybe not. Kind of disappointing when you think about it…

But at least there’s a helpful video provided by Space.com. Enjoy!


Source: space.com

News from Space: Dream Chaser Begins Testing

dream_chaserEver since their Space Shuttle program was forcibly shut down in 2011, NASA has been forced to look to the private sector to restore their ability to put human beings into orbit from American soil. This consists of providing the seed money needed for companies to develop a new race of “space taxis”.  One such program is the Dream Chaser, a reusable shuttle that will fly astronauts into low Earth orbit (LEO) and to the International Space Station (ISS).

Much like a standard Space Shuttle, the Dream Chaser is designed to launch atop a United Launch Alliance Atlas V rocket and land on a shuttle landing facility. And after lengthy periods of research and development, the Dream Chaser is now moving forward with a series of ground tests at NASA’s Dryden Flight Research Center in California that will soon lead to dramatic aerial flight tests throughout 2013.

dream-chaser-testThis consisted of putting the shuttle together and then conducting a series of what’s known as “Pathfinding tow tests” on Dryden’s concrete runway. The purpose here is to validate the performance of the vehicles’ nose skid, brakes, tires and other systems to prove that it can safely land an astronaut crew after surviving the searing re-entry from Earth orbit. For the initial ground tests, the ship was pulled by a tow truck at 16 and 32 km/h (10 to 20 mph).

Later this month, the next leg of the test will consist of towing it up to speeds of 64 to 95 km and hour (40 to 60 mph). The next phases of testing will take place later this year in the form of airborne captive carry tests, where an Erickson Skycrane helicopter will fly the fuselage around to see how it holds up. Approach and Landing Tests (ALT) will follow to check the aerodynamic handling, which will consist of atmospheric drop tests in autonomous free flight mode.

dream-chaser-test1In an interview with Universe Today, Marc Sirangelo – Sierra Nevada Corp. vice president and SNC Space Systems chairman – spoke on record about the shuttle and where it is in terms of development:

It’s not outfitted for orbital flight. It is outfitted for atmospheric flight tests. The best analogy is it’s very similar to what NASA did in the shuttle program with the Enterprise, creating a vehicle that would allow it to do significant flights whose design then would filter into the final vehicle for orbital flight.

In short, the Dream Chaser has a long way to go, but the program shows great promise. And as already noted, they are not the only ones benefiting from this public-private agreement that seeks to develop commercial vehicles for the sake of kick starting space travel.

dream-chaser-dockedOther companies include Boeing and SpaceX, companies that were also awarded contracts under NASA’s Commercial Crew Integrated Capability Initiative, or CCiCap. All three have their own commercial vehicles under development, such as the Boeing CST-100, SpaceX’s Dragon, which are similarly designed to bring a crew of up to 7 astronauts to the ISS and docking with it for up to 6 months.

Dream_Chaser_launchBut of course, everything depends on NASA’s approved budget, which seems headed for steep cuts in excess of a billion dollars if a Republican dominated US House has its way.This is the third contract in NASA’s Phase 1 CCiCap contracts, who’s combined value is about $1.1 Billion and runs through March 2014. Phase 2 contract awards will eventually lead to actual flight units after a down selection to one or more of the companies. The first orbital flight test of the Dream Chaser is not expected before 2016 and could be further delayed if NASA’s commercial crew budget is again slashed by the Congress – as was done in the past few years.

But as William Gerstenmaier – NASA’s associate administrator for human exploration and operations in Washington – indicated in a statement, the larger goal here is one of repatriation. As it stands, US astronauts are totally dependent on Russia’s Soyuz capsule for rides to the ISS, which costs upwards of $70 million a trip. NASA hopes to change that by rekindling the “good old days” of space travel:

NASA centers around the country paved the way for 50 years of American human spaceflight, and they’re actively working with our partners to test innovative commercial space systems that will continue to ensure American leadership in exploration and discovery.

And I for one wish NASA luck. Lord knows thirty-years of post-Cold War budget cutbacks hasn’t been easy on them. And hitching rides into space above Cold War era rockets is not the best way of getting your astronauts into space either!

In the meantime, check out this concept video of the Dream Chaser in action, courtesy of the Sierra Nevada Corporation:


Source: universetoday.com

Food From Space: NASA’s 3D Pizza Printer

3DpizzaNASA has made some buzz with its announcement to print 3D pizza in space. And while this might sound like an awesome and appetizing use of the pioneering technology, it also has some pretty exciting implications for space exploration. For decades, astronauts have relied on freeze dried and thermostabilized food to meet their nutritional needs. But with 3D printing being considered, astronauts of the future could be using something akin to a replicator out of Star Trek.

Earlier this month, Quartz broke the news that NASA’s Systems & Materials Research Corporation received a $125,000 grant to spend six months building a prototype of a 3-D food printer- one that will be able to print out a tasty pizza before venturing on to other food items. According to his NASA proposal, the printer spits out starches, proteins, fats, texture, and structure, while the inkjet sprays on flavor, smell, and micronutrients.

3d-pizza_printerThe pizza printer is the brainchild of Anjan Contractor, a mechanical engineer at the Systems & Materials Research Corporation who has long worked on 3-D printing technologies. In an interview with Quartz, he explained the process:

It works by first “printing” a layer of dough, which is baked at the same time it’s printed, by a heated plate at the bottom of the printer. Then it lays down a tomato base, “which is also stored in a powdered form, and then mixed with water and oil,” says Contractor. Finally, the pizza is topped with the delicious-sounding “protein layer,” which could come from any source, including animals, milk or plants.

As already mentioned, astronauts currently rely on food that is freeze dried prepackaged so that it can be eaten in microgravity. Astronauts get supplies when necessary from the International Space Station, where cargo vehicles transport their “fresh” food. But future astronauts who go to more distant places, like Mars, won’t be able to resupply. And that’s where the Advanced Food Project really comes into play.

pizzaWhen considering missions to Mars and farther into space, multiple issues need to be addressed. Grace Douglas, an Advanced Food Technology Project scientist at NASA, explains what these are and how 3D food can address them:

This is the only food that the crew members will have, so it needs to maintain its nutrition content for the length of the mission, and it has to be acceptable. If they don’t want to eat it, they won’t eat enough… 3-D food printers are looking at providing powdered forms of ingredients, and these would not be processed ahead.

That’s a good thing: minimally processed food has more nutrients, and it’s tastier. It also allows for even more options than what’s available today. And to address another key problem – printing in microgravity – NASA already has the option of using some of the more advanced prototypes.

anti-grav3d2Consider the Mataerial, a recently-developed 3D printer that is capable of printing in zero-gravity. NASA is exploring other processing technologies outside of the 3-D printing realm as well. High-pressure processing, which uses high pressures with a low-heat treatment to sterilize foods, is one option. Another is microwave sterilization–a process that uses high-heat treatments for a shorter period of time.

These latter technologies would make fresh foods accessible by ensuring that they are perfectly sterile, thus removing the need for food that needs to be dried or processed in advance. While all three technologies are still in the early phases of development, Douglas and others expect that they will off the ground and running by the time a manned mission to Mars is being planned.

And space is really just the tip of the iceberg when it comes to printing food. Here on Earth, it is a potential solution for ending world hunger. But that’s another, very interesting story. Stay tuned for it…

In the meantime, watch this video of a 3-D printer creating chocolate:


Sources: fastcoexist.com, qz.com

Alien Matter Found on the Moon!

blue moonYes, it may sound like the setup for a really bad movie. And in truth, it’s more than just a little misleading. But in this case, “alien matter” refers to minerals deposits that were recently discovered on the surface of the Moon which may not belong there. These deposits include Magnesium-rich spinel and olivine found in the central peaks of lunar craters, which scientists previously believed to be indigenous to the surface.

Spinel forms, it should be noted, can be found here on Earth and are the product of high-pressure and temperatures, conditions which do not exist on the Moon’s surface. Hence, scientists were forced to conclude that the presence of such minerals on the surface had to have come from somewhere else. Most likely a meteoric impact, which the Moon – as its pockmarked surface can attest to – get’s no shortage of.

moon-asteroid-impact-1600However, in the past, it was generally accepted that any collision that big would melt or vaporize the impacting material, leaving behind only geochemical traces and tiny fragments. The quantities that were noticed more recently defied this interpretation, consisting or relatively large deposits and not mere fragments.

However, Jay Melosh and his colleagues from Indiana’s Purdue University were able to show through a series of computer simulations that asteroids are capable of still producing these craters at lower impact speeds, giving them greater chance of survival. What’s more, this would leave their mineral compositions unvaporized, allowing for more generous deposits of material.

In a paper recently published in Nature Geoscience, the team explains their process and what they were able to determine:

We find that for … impact velocities below about 12 kilometres per second, the projectile may both survive the impact, and be swept back into the central peak of the final crater as it collapses… We focused on a simulation of the 93-kilometre diameter Copernicus crater because of the reports of olivine and magnesium-spinel in its central peak… The olivine observed in the central peaks of Copernicus and other lunar craters may be a remnant of the projectile and thus does not indicate deep excavation of the lunar mantle or lower crust.

Overall, their simulations revealed that roughly a quarter of lunar impacts occur at speeds below 12 kilometres per second, which is slow enough for a significant fraction of the impacting object to remain largely intact. According to astronomer Michael Brown of Melbourne’s Monash University, their conclusions about low-velocity asteroid impacts are entirely plausible.

NASA_moonWhat’s more, Brown indicated that previously-held notions about meteors and asteroids impacting the Moon may be biased by our experience here on Earth, where impacts occur at much higher velocities.

When a large asteroid hits Earth, because of the Earth’s gravity and because of the velocity of the asteroid, you’re looking at impact speeds of 20-30 kilometres per second.

But of course, he also added that there are concentrations of spinel on the Moon’s surface which cannot be explained by impact events. How and why these were brought to the surface is something that future generations of astronauts will have to study, no doubt with the help of interior examinations of the planet and surface digs.

ESA_moonbaseWhich brings up another important aspect of this information. Given that the Moon is prone to meteors and asteroids, something we don’t have to worry nearly as much about on Earth due to our protective atmosphere, any plans to colonize it will have to take surface impacts into account. How exactly are people going to be able to live, work, and enjoy themselves on the surface if they have to contend with periodic massive impacts?

And in the meantime, check out this video from CBC about the March 17th impact, the largest impact in recent history which was visible from Earth:

http://www.cbc.ca/player/News/TV%2BShows/The%2BNational/Technology%2B&%2BScience/ID/2387906092/

Sources: cbc.ca, (2)