News from Space: Full Model of Exoplanet Created

gliese_581gEver since the Kepler space probe began finding hard evidence of the existence of exoplanets – i.e. planets orbiting suns outside of our Solar System – scientists have been working hard to determine what conditions on these worlds must be like. For instance, it is known that planets that orbit closely to their red dwarf parent suns are tidally locked – meaning they do not rotate on their axis.

This, in turn, has led to the proposal that any watery worlds in the vicinity could form what’s called an “Eyeball Earth.” Being directly under the local star, with one side perpetually facing towards it, the light would be intense enough to melt a circular patch of water, while the rest of the planet would remain locked in a deep freeze. In short, not an ideal situation for supporting life.

eyeball_earthHowever, a new three-dimensional model has been created, thanks to the efforts of two researchers at Peking University. In their research paper, they suggest that ice and oceans on these planets would be dynamic, which is both good and bad. Basically, it means an Eyeball Earth has a narrower habitable zone, but that more of the surface has the potential to support life. It also means that the “eyeball” looks more like a lobster!

This paper represents the next step in scientific analysis of exoplanets. Initially, estimates of habitability – i.e. temperatures that could allow liquid water on the planet surface – were based on a single analysis of the planet’s atmosphere to see how much light reaches the surface. But, in the real world, atmospheres form clouds, distribute heat through winds and convection, and exhibit other sorts of complex behavior.

eyeball_earthThese are the sorts of things that are handled in the full, three-dimensional climate models built to study the Earth. Hence, the Peking research team adapted these same models to handle exoplanets that differed significantly from Earth. But these models didn’t capture a critical part of the distribution of heat on the Earth: the ocean circulation. Instead, it treated the entire ocean as a two-dimensional slab.

The new study corrects for that by using a coupled ocean-atmosphere climate model, the Community Climate System Model version 3. For their study, they used Gliese 581 g, a potentially Earth-like planet orbiting in the habitable zone of an red dwarf star 20 light years away. This planet, coincidentally, is ranked by NASA as being the most Earth-like exoplanet yet seen in the known universe.

Gliese_581_-_2010Critically for the model, it’s close enough to its host star to receive 866 Watts/square meter at the top of its atmosphere (whereas the Earth receives 1,366). Since it is not yet known what Gliese 581 g’s atmosphere looks like, the authors assumed an Earth-like composition, but varied the amount of CO2 to change the intensity of the greenhouse effect. From all this, the planet was assumed to be covered in a deep ocean.

After giving the model 1,100 years to come to equilibrium, the authors sampled a century of its climate. With carbon dioxide concentrations similar to the Earth’s (330 parts per million in the model), the “eyeball” vanished. That’s because ocean currents formed along the equator and brought in ice from the west that split the eyeball into two lobes that flanked the equator – which resemble the claws of the lobster.

eyeball_earth1The currents then transferred heat to the eastern portion of the planet, which melted the ice to form the lobster’s tail. In addition to the ocean current that altered ice distribution, an underwater circulation (similar to the one on Earth) formed, which sent warmer water toward the poles. In the atmosphere, a jet stream also formed over the equator, which also distributed some heat to the unlit side of the planet.

Ultimately, the new model suggests the habitable zone of watery planets near red dwarfs is a bit more narrow than previous studies had suggested. The good news is that, in this model, the ice never got more than 3m thick on the dayside of the planet. That’s thin enough to allow light to reach the water underneath, meaning photosynthesis is a possibility over the entire dayside of the planet.

OceanPlanetAlthough this model is a major improvement, it still lacks a key feature that’s likely to exist on planets – namely continents, or at least features on the seafloor that differ greatly in height. These will radically alter the currents on the planet, and thus radically alter the distribution of heat within the ocean. Unfortunately, this information is even harder to come by at present than atmospheric conditions.

So for the time being, all we really know about Gliese 581 g and other similar exoplanets is that their surfaces are icy, but habitable – not unlike the Jovian moon Europa. However, that is not to say that we won’t have more information in the near future. With Kepler still in operation and the Gaia space observatory now in space, we might be able to construct more detailed models of nearby exoplanets in the near future.

Also a coincidence, Gliese 581 g just happens to be the setting of my writers group’s upcoming anthology, known as Yuva. And with this latest bit of info under our belts (basically, that the entire planet is a big, watery ball), I imagine we’ll have to adjust our stories somewhat!

Source: arstechnica.com

Futuristic Guns

Many of these will look familiar, and for good reason. In addition to being futuristic looking, they also happen to be real! For many years, science fiction movies and series have used weapons of legitimate manufacture in order to inspire a futuristic feel.

Calico M960:
Calico960aHere’s a gun that has been featured in several movies, games and television series, and its obvious why. Just look at the thing. A fully-automatic pistol, this baby provides a lot of firepower in a small and uniquely shaped package. As one of the first personal defense weapons to feature a top-mounted magazine, a revolutionary concept for its time which has since caught on bigtime.

Guns of this class were featured in the sci-fi movies Robocop 2, Robocop 3, Total Recall, Virtuosity, and Star Trek: First Contact.

Daewoo K11:
daewook11This gun not only looks futuristic, it is downright revolutionary in its design. Whereas most assault rifles have grenade launchers slug underneath the front barrel, this version carries an launcher mounted on top and fed by a bullpup magazine.

Designed by the Republic of South Korea in 2006, the weapon also comes with a state of the art scope which features the latest in a ballistics computer technology as well as thermal/night vision. I have yet to find a sci-fi franchise which has used it, but time will tell. These things aint cheap, after all!

FN F2000:
f2000As part of the new generation of bullpup assault rifles, the F2000 is of Belgian manufacture that’s been around for the better part of a decade. It’s futuristic features include the revolutionary new handle and trigger grip, bullpup magazine and updated sights.

Because of its aesthetic appeal, the F2000 has been featured in numerous places, including Terminator: Salvation, the Modern Warfare and Ghost Recon video game series, and the upcoming G.I. Joe: Rise of Cobra.

HK XM29:
Xm29Also known as an OICW (Objective Individual Combat Weapon), the XM29 is part of the new generation of hybrid assault rifles that features the a secondary bullpup magazine which houses its compliment of grenades.

Much like the K11, this weapon combines the benefits of a 5.56mm assault rifle, a 20mm grenade launcher and an ultra-modern scope that contains a ballistics computer, laser range finder, advanced optics and night vision. It was featured in the Ghost Recon series, Die Another Day, and Universal Soldier: The Return.

KRISS Vector:
kriss1When I first saw this weapon, all I could say was “Wow, now there’s something that doesn’t qualify for home defense!” A .45 caliber weapon, fully automatic, and very compact, this weapon is futuristic, uniquely designed and deadly. A triple threat, quite literally!

And the list of features and featurettes include the upcoming Total Recall remake, Resident Evil: Retribution, the Nikita television series and the Modern Warfare and Ghost Recon game franchises.

Mossberg 500:
mossberg_500_bullpupHere we have a game changer! And interestingly enough, it’s been around for quite some time. Back in 1985, Mossberg decided to upgrade their long lineup of shotgun stocks by taking advantage of the concept of bullpup firearms. Essentially, this means that it is loaded from the rear and ejects spent cartridges from behind the trigger mechanism.

Given it’s futuristic look, it was featured in several sci-fi movies during the 80’s and 90’s, most notably The Running Man, Predator 2, and the film version of Stargate.

NTW-20:
ntw20_1Go big or go home! That seems to be the reasoning behind this 20mm (.78 cal) assault rifle, which comes direct from South Africa, famous purveyor of grisly firearms! As part of an international series of large-caliber rifles which emerged during the 1990’s, this weapon was meant to give snipers the ability to take down armored troops and vehicles. Well, it certainly does that!

In addition to appearing in the movie District 9, it was also featured in the Halo series as the USNC sniper’s rifle. And anyone’s who played that series knows just how powerful that baby is. Blamoo! They all fall down…

PP-2000:
pp_2000Next up, the Russian sidearm of choice for today’s military, police forces, and apparently even cilivians. At least that’s what the designation PDW (Personal Defense Weapon) means. Can’t imagine most houses have any real cause for stocking a 9mm submachine gun, but that’s a matter for the courts.

Because of it’s appearance and popularity with modern armed forces, it was features in the video game series’ Modern Warfare, Ghost Recon, Bad Company, SOCOM, and the Russian sci-fi thriller The Interceptor (Zapreshchyonnaya Realnost).

P90:
P90Here we have yet another PDW that really doesn’t seem to fit that criteria, not when its a compact submachinegun and packs as many as 50 bullets! And in addition to its ammo count, it also boasts two very high-tech advancements, including a top loading magazine and the same handle/trigger grip as the F2000. Not surprising since they have the same maker – Fabrique Nationale (FN) from Belgium.

For obvious reasons, this gun has a long history of making special appearances. Its credits include Equilibrium, I, Robot, Babylon A.D., District B13 and its sequel, and was specifically chosen to be the sidearm of choice on the shows Stargate and Stargate: Atlantis.

Steyr AUG:
Steyr_augAnother popular item, and one which I’m sure everyone out there is familiar with. Invented back in 1978 by the Austrian-based Steyr company, this weapon was the first assault rifle to introduce the bullpup loading design. On top of that, its appearance is downright futuristic!

It too has a long list of credits, including Robocop 1 and 2, Predator 2, District B13, as well as the television shows Red Dwarf, Space: Above and Beyond, and Firefly.

Okay! There’s more, of course, but ten examples is kind of my limit. And because I think something like this could go longer than I’m willing to type… at least in one sitting. Enjoy the gun show (no bad pun!) and see y’all next time.

Cool Ships!

God, what an obvious extension of the whole conceptual sci-fi thing, I can’t believe I didn’t think of it sooner! After all, what is a sci-fi franchise without some cool spacefaring vessels? Sometimes, these come in the form of exploratory ships that chart the unknown regions of the galaxy. Sometimes they are battleships which kick ass and don’t do much else. And sometimes they are generational ships, spending decades, centuries or even millennia cruising through space, ferrying people to new star systems and new galaxies.

But whatever their purpose, futuristic vessels are a constant source of enjoyment and interest. A lot of imagination and creativity goes into creating them, and what comes out is often a testament to the allure of speculative sci-fi. Anyway, today I thought I’d explore some choice examples of sci-fi ships and what makes them so cool. Here goes…

Defiant:
Making its debut in Star Trek: DS9, the Defiant became the workhorse of the station and the first line of defense against it’s enemies. Originally designed for combat with the Borg, the Defiant was a prototype for an entire generation of warship. Smaller than most starships, but also faster and boasting very powerful weaponry, the Defiant quickly gained a reputation for being the most dangerous vessel in the quadrant!

Yep, when this ship made its debut, I started watching the show. Every episode that featured space battles with the Defiant were worth watching, in my estimation. Blasting those rapid-fire cannons, firing those quantum torpedoes, blowing up anyone stupid enough to cross it; the Defiant did it all!

It’s prototype version even boasted a cloaking device, something the Federation borrowed from the Romulans so they could slit into Dominion territory once they found out about them. In time, the Defiant was lost, but more of its kind appeared to take up its role. The Valiant, the Sao Paolo, and a host of others were pressed into service as the series went on and the Dominion War became the focal point of the show. Much like their predecessor, these new Defiant-class ships kicked plenty of asses and never went down without a fight. A big, brutal, hard-slogging fight!

Galactica:
This ship is the namesake of the original movie and series and got a makeover for the re-imagining which was released back in 2005. And though her appearance has changed somewhat since the 1970’s when the original movie came out, the Galactica’s role and importance has remained the same. The last surviving Battlestar of the Twelve Colonies, she is the sole protector of the human fleet as it flees the Cylon onslaught and makes its way to an elusive world called Earth… and salvation!

One thing that did change between the old and new series was the sophistication of the design. Whereas in the 1970’s version, the Galactica was a state of the art, modern warship with laser cannons and a full crew, the newer version was an older, outdated vessel with projectile cannons and flak guns that had been retired from active service. As the series opens, we see that the Galactica was being converted into a museum ship that was meant to commemorate the last war against the Cylons which had ended over twenty years ago. It’s crew was skeletal and its senior officers were also due for retirement.

However, all of that changed when the Cylons launched their surprise attack on the Colonies. Being an obsolete vessel which used outdated computers and had no wireless networks, the Galactica was the only ship that wasn’t crippled by the virus the Cylon’s used to disable the Colonial fleet. After hastily equipping themselves with ammunition and some equally outdated Vipers from their showroom, the Galactica was forced into service. But by this time, the war was effectively over, and the Captain and crew dedicated themselves to a new mission: to find the only other human colony in existence (Earth) and begin repopulating their species.

Despite her age, the Galactica could still surprise her enemies when she needed to. Unlike her more modern companions, including the Pegasus which she met in season two, she had a habit of getting out of some rather tight spots. You could say that in the new series, this ship was a metaphor for humanity; aging and endangered, but a survivor nonetheless!

Millennium Falcon:
Here she is, the centerpiece of this list! For what ship is more cool than the Millennium Falcon? I mean really! Sure, she’s not the biggest or the most heavily armed ship on this list, but she is the fastest, nimblest, and she’s definitely got the most character. In some ways, she was almost part of the cast of the original Star Wars series, and I’m sure everyone felt bad for her when she got scuffed up during that last battle in Return of the Jedi ;).

Officially, the Falcon is a modified Corellian transport. Corellia, the planet Han calls home, is renowned for producing good ships in addition to good spacers. They’re fast, sleek, and infinitely modifiable. It’s little wonder then why they are a favorite amongst smugglers. And Corellian spacers especially are known for being very monogamous and loyal when it comes to their ship selection.

Prior to joining the Rebellion, the Falcon was primarily used to smuggle spice from Kessel to other regions of the Galaxy, usually at the behest of Jabba the Hutt. In spite of its speed, the Falcon would occasionally get boarded by Imperial patrols. When this happened, Han and Chewi relied on a secret compartment to stash their goods. However, on one of his final runs, Han was boarded by an Imperial patrol and was forced to ditch his manifest.

Shortly thereafter, Han and Chewi joined the Rebellion and the role of the Falcon changed considerably. Now, it was involved in attack missions, the most notable of which were the assaults on the first and second Death Star. At other times, it continued to do what it did best – fly fast and elude Imperial ships!

Nostalgia for Infinity:
Here we have an interesting ship, which comes to us from the mind of Alastair Reynolds and the Revelation Space universe. Known as a “Lighthugger”, this class of vessel was one which could travel close to the speed of light thanks to its massive “Conjoiner Drives”. These engines, which were attached to the outsides of the ships, relied on a controlled singularity to generate the necessary inertia to push the ship as close to light speed as was physically possible for a vessel of its size.

The crews of these ships were known as “Ultranauts”, or Ultras for short. Typically, these were the kinds of cybernetically enhanced human beings who were capable of interfacing with the ship’s advanced machinery, prolonged space travel and withstanding the inertial stresses caused by near-light speed travel.

In the case of the Nostalgia, the ship was commanded by a Triumvir, three Captains who took turns commanding the ship while it was in deep space and the others were in reefersleep (i.e. cryogenic suspension). This included Ilia Volyova, Sajaki and Hegazi, three Ultras who had taken over after the Captain and ship had succumbed to what was known as the “Melding Plague”. This virus is a key element to the story of RS, being alien in origin and which infects and perverts nanotechnological matter.

In the course of running their various missions to and from the many worlds of the RS universe, the crew came into possession of a series of “Cache Weapons”, missiles and gun platforms which were apparently of Conjoiner design, and were officially known as Hell-class weapons.  As the series progressed, both the Nostalgia, its crew, and these weapons played an increasingly important role in defending the human race from the alien threat of the “Inhibitors” (see Planet Killers, The Inhibitors, for more detail).

Red Dwarf:
The eponymous spaceship from the BBC series, the Red Dwarf – otherwise known as the “giant red trashcan” – was a huge mining vessel measuring 10 km in length, 6.5 km in height, and 5 km in width. Built for mining and owned by the Jupiter Mining Corporation, the ship is immense, largely self-sufficient, and run by an AI named Holly. And for some reason, it has an asteroid embedded in its hull (this is never explained).

In the beginning of the series, a radiation leak killed the entire crew, except for the protagonist Dave Lister, a technician who was apparently in suspended animation at the time. In order to ensure his survival, Lister is kept in suspension by Holly until all the background radiation dissipates, a process which takes over three million years. As a result, Lister wakes up to find that he’s the last living human in existence. His only companions are the hologram of his former bunk-mate Rimmer, and a humanoid feline named Cat who evolved from Lister’s cat (Frankenstein) over three million years that he was asleep.

Over the course of the show, the crew encounters new planets, species and time distortions aboard the Red Dwarf, all the while trying to make their back to Earth. The largely self-sufficient ship takes care of their every need, though it has begun to run out of certain supplies after three million years (including Shake n Vac and all but one After Eight mint!).

Serenity:
I’ve spent quite a bit of time talking about Firefly as of late, but the list says cool ships so I don’t see how the Serenity can possibly be left off this list! As the centerpiece of the single-season series and the movie, the ship has a long story and a lot of character, much like her crew! Originally designed as a class of cargo freighter, the Firefly is apparently an older model of ship that is no longer in use with the Alliance but remains popular out on the rim.

All references to it in the early episodes indicate that the series is essentially obsolete, but due to their ruggedness, shelf-life and the presence of secret compartments, they remain a popular item amongst smugglers. Hmmm, echoes of the Millennium Falcon there. Nevertheless, as the series progresses, this reputation is illustrated in how Mal and the crew are able to stow illegal goods and how Kaylee is able to keep the ship running under tight conditions with all kinds of improvised repairs. And despite the fact that it is no longer being constructed, most of its parts are still available and easily attainable on the open and black market.

Much like all ships in the Firefly/Serenity universe, the Firefly is apparently a sub-light vessel, incapable of traveling faster than the speed of light. Though unarmed, it is fast and maneuverable in both space and planetary atmospheres. This is made possible by the addition of two external multi-directional thrusters which allow for takeoff, landing, and the occasional crazy Ivan (which the crew pulled in the pilot episode). It also boasts two shuttle pods, which can be used as escape vessels or as secondary transports. Inara, the Companion crewwoman, uses one such pod as her quarters and transport for personal away missions.

The ship also has its own medbay and crew quarters, which is another feature that makes it popular amongst spacers. In fact, the availability of a private room was intrinsic in Mal’s offer to “recruit” Jayne Cobb from another gang, which was illustrated in a flashback sequence during the episode “Out of Gas”. There was even room enough to accommodate River and Simon and Book, which would indicate that the ship contains eight bunks in total. A communal dining area and food processors also see to their needs while not sleeping, gun-slinging, or generally doing something illegal!

USS Sulaco:
After barely surviving her first encounter with the xenomorph in Alien, Ellen Ripley and a crew of Colonial Marines returned to LV-426 in Aliens to settle the score! The ship that brought them there was none other than the USS Sulaco – a big, bad, military vessel boasting big-ass guns and enough Marine firepower to level an entire colony. Much like the Nostromo, the Sulaco is a reference to the work of Joseph Conrad, writer of Heart of Darkness (significant? Oh, I think so!).

Apparently, the Sulaco is a Conestoga-class warship designed for ferrying Marines to and from conflict areas in the future. While it was only carrying one platoon of Marines and two dropships in the second movie, this class of ship is capable of carrying 20,000 tons of cargo, eight UD4L Cheyenne-class dropships and a crew of 90 personnel (according to other franchise reference material). Hmm, too bad they didn’t pack the Sulaco to capacity, otherwise Ripley would have never had to take matters into her own hands to kill the Queen Alien!

Much like everything else in the Alien franchise, the Sulaco and all other Conestoga-class vessels are built by the Weyland-Yutani corporation, military division. Clearly, their purpose is to enforce the law, hunt down (and capture) xenomorphs, and maintain the peace aboard its many, many colonies. All part of their commitment to “Building Better Worlds” I guess 😉

White Star:
My personal favorite of this list, the coolest and most badass ship to come from the Babylon 5 universe! Fast, small, and boasting incredible firepower, the White Star was the workhorse of the Shadow War, Sheridan’s campaign to liberate Earth, and the early military campaigns of the Interstellar Alliance. In a lot of ways, it is much like the Defiant from the DS9 universe… I do believe they stole the idea from Straczynski!

As a collaboration between the Mimbari and the Vorlons, the White Star ships were partially based on organic technology. This meant that the ship was essentially alive and could heal itself when damaged. In addition, its organic armor was capable of deflecting energy, giving it a sort of shielding which could protect it from anything other than a physical impact.

The ship’s main weapons consisted of pulse cannons and a single beam cannon mounted in the nose. This gave it the ability to pepper targets with rapid fire shots while conducting high-speed maneuvers, and slicing them with focused bursts while on an attack vector.  All of this came in handy when dealing with Shadow vessels, which are notoriously hard to kill! It also proved useful when up against larger, heavier ships like Earth Force cruisers, Drakh vessels, and anything else the known universe could throw at them.

From the initial prototype, the Mimbari would go on to construct thousands of White Star-class vessels which were crewed by the Rangers and members of the Religious Caste. After the formation of the Alliance, Sheridan proposed the creation of a heavier version which culminated in the design of two White Star Destroyers, the Victory and Excalibur. This latter ship was the centerpiece of the spinoff series, Crusade.

Final Thoughts:
Well, that was fun! No final thoughts today, as I really have none to offer. I just really like cool ships! And much like most toys for grown ups, they are made cool by the fact that they are used for some fun purposes – like smuggling, fighting or exploration – and generally boast one or more of the following factors: speed, firepower, special abilities, visual appeal, and maybe some secret compartments. Any or all of these will do, thank you very much. Until next time!