MetaFilter posts tagged with spaceexploration

3 Million Tons of Extraterrestrial Ice Fishing

filthy light thief — Wed, 18 Nov 2009 22:01:42 -0800

At least three million tons of fishlike creatures could theoretically live and breathe on Europa, according to Professor Richard Greenberg of the University of Arizona in Tucson. Greenberg recently presented his findings to the Division for Planetary Sciences, American Astronomical Society (PDF, Google quick view). Greenberg has written about potential life on Europa before, but his recent calculations suggest that the concentrations of oxygen would be great enough to support not only microorganisms, but also more complex animal-like organisms which have greater oxygen demands. Water under the ice of Europa is the first step towards life on Europa. Life on Europa has been proposed before, even with potential Europa-like situations found on Earth at the Blood Falls of Antarctica (previously). Water could be warmed through the gravitational push and pull of Jupiter, generating huge planetary waves in Europa's submerged ocean. Galileo's expedition, which found several lines of evidence to support the theory that liquid oceans exist under Europa's icy surface, ended when it crashing into Jupiter to prevent lifeforms from Earth possibly infecting Europa. Jupiter Europa Orbiter is planned to launch February 2020, with a goal to explore Europa to investigate its habitability.

50 years of space exploration- The poster

pjern — Sun, 11 Oct 2009 13:26:06 -0800

50 years of space exploration on on huge poster.

Where am I now? Travelin' 1.18km/s(2646mph). 70,289km from the Moon. 19 hrs! RU Excited? I am! #lcross

filthy light thief — Thu, 08 Oct 2009 10:55:27 -0800

On October 9th, NASA spacecraft will run into the moon, and on purpose. The Lunar Crater Observation and Sensing Satellite (LCROSS) and its rocket's Centaur upper stage will impact the moon, with the goal of sending some of the (possibly present) ice above the lunar surface. Once out of the eternal shade of the moon's south pole, sunlight will break the ice up into H+ and OH- molecules, which can be detected by the Lunar Reconnaissance Orbiter (LRO). The initial impact site was the crater Cabeus A, but the target was later changed to Cabeus (proper), selected for highest hydrogen concentrations with the greatest level of certainty, and for the high-contrast back drop to detect ejecta and vapor measurements. NASA has provided guides for amateur observations of the impact, a facebook group, and a Twitter feed so you don't miss the moment.

Phoenix to land on Mars.

goodnewsfortheinsane — Sun, 25 May 2008 16:13:29 -0800

Phoenix is set to land on Mars at 2353 UTC. Video coverage: NASA | CNN

Booking my ticket for Titan.

Abiezer — Thu, 26 Jul 2007 19:23:49 -0800

Fifty Years of Space Exploration Professor John Zarnecki gives the The Open University Lecture 2007. You can watch or listen whilst exploring the resources elsewhere on the OU site.

Exploring Space

sluglicker — Thu, 15 Feb 2007 02:24:15 -0800

The Quest for Life. And while you're at it, play out the life of an astronaut on this simulated mission. Do you have the right stuff to succeed and survive?

"We're space explorers, and we need space!"

Eideteker — Fri, 02 Feb 2007 10:40:32 -0800

Where did you want to live when you grew up? If you're like me, you read Clarke's SF classic, Rendezvous with Rama (soon to be a major motion picture?). Donald E. Davis took what we dreamed about and illustrated it, for NASA. His depictions of O'Neill Cylinders, Stanford Tori, and Bernal Spheres are in the public domain (and make excellent desktop wallpaper).

Spaceship renderings (and I don't mean melted fat!)

OmieWise — Fri, 19 Aug 2005 11:11:32 -0800

"Since I was a little boy I have always dreamed that one day man would journey to the moon and beyond. I now try to create images that show the possibilities of space flight with the technologies that are currently available today or what could be in the near future. In doing so, I try to depict what a manned space mission might actually look like to one of the 9 planets in our solar system." [Not Flash, but fun for Friday anyway.]

European Space Agency

Pretty_Generic — Fri, 21 Jan 2005 12:18:24 -0800

Instead of liquid water, Titan has liquid methane. Instead of silicate rocks, Titan has frozen water ice. Instead of dirt, Titan has hydrocarbon particles settling out of the atmosphere, and instead of lava, Titanian volcanoes spew very cold ice.

Ring-around-the-posie

moonbird — Fri, 02 Jul 2004 06:17:31 -0800

" It was beyond description, really, it was mind-blowing," she said. "I'm surprised at how surprised I am at the beauty and the clarity of these images. They are shocking to me."

Stairway to Heaven

alms — Tue, 23 Sep 2003 18:34:12 -0800

An Elevator to the Stars. The paper of record claims this isn't science fiction, but do we really believe that in ten years we'll be able to build a 60,000 mile long cable capable of supporting 13 ton cargo loads? Would you trust this to take you into asynchronous orbit? (Or maybe you just want to make like Joe Kittinger and jump out at 100,000 feet.)

retro-future

wobh — Sat, 03 May 2003 08:15:15 -0800

Designing a Space Colony? Start Here. Some light Reading. Be sure to check out the artwork (more space art by Don Davis).

Pioneer 10 finally gives it up for good.

40 Watt — Tue, 25 Feb 2003 22:41:00 -0800

Pioneer 10 space probe finally packs it in for good. So long, little fella...

Steven Den Beste — Tue, 03 Jul 2001 07:57:49 -0800

"Survivor" meets "Star Trek". The next tourist in space may be a game-show winner. (Gad.)

lagado — Mon, 28 May 2001 00:02:37 -0800

NASA releases new high resolution images of the "Face on Mars" digitally enhanced to make it it look like an ordinary mesa rock formation.
Of course, we know better...

Sean Meade — Wed, 11 Apr 2001 14:29:56 -0800

Future Moon Base Sited

the key points:
Shackleton crater (best image)
a resource of hydrogen, likely in the form of water ice, ammonia, and other materials
at the Moon’s south pole and is some 30 kilometers in size
peak of external light - more or less continual Sun. solar energy becomes usable all the time. in the permanently shadowed areas in that region, various astronomical instruments could be operated with telescopic optics kept cold and stable

monstro — Mon, 22 Jan 2001 21:07:41 -0800

Will the Pluto mission once again get cancelled? I mean, now that Pluto isn't a planet anymore; apparently, it's been downgraded to "big ball of ice." After all those years of service, of faithful rotation, that steadfast revolve, how can they just kick a planet out like that?! It's a travesty, I tell you -- a travesty!