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Scientists are particularly interested in Saturn's moon Titan because it's one of the few known moons with its own dense atmosphere. Titan's atmosphere is also thought to be very similar to what Earth's atmosphere was a long time ago. By learning about Titan, we'll learn about our own planet.
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This site is no longer maintained. It contains historical data.

For current information about the NASA Astrobiology Program, please visit http://astrobiology.nasa.gov/


2001-07-31 | SCIENCE, MISSIONS
Space Seeds Return to Earth

When the space shuttle Atlantis returned to Earth from its most recent mission, it brought home some unusual cargo—seed pods grown in space. For eight weeks, a batch of Arabidopsis plants (better known as "mustard weed") were grown aboard the International Space Station to determine whether plants can complete their entire seed-to-seed life cycle in a weightless environment. The Arabidopsis plants seemed to grow well in orbit, producing seedpods as they would here on Earth. Now, says Weijia Zhou, Principal Investigator for the Advanced Astroculture experiment, "we are waiting for retrieval of the payload to see whether or not seeds are indeed inside the seed pods." Normal, healthy seeds will be a good sign that multiple generations of plants can be grown in space. Understanding how Earth life responds to conditions in space is one of astrobiology's main goals.

Growing plants in space could also be the key to supporting humans on long-distance missions or in colonies on other worlds. Space plants could provide fresh food, oxygen, and even clean water for explorers living for long stretches aboard orbiting outposts or on the Moon and Mars. Understanding how life can migrate from one world to another is a major objective of astrobiology.


More on this story Full text of original item from Science@NASA, Jul 31, 2001

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The preceding news links are provided as a public service for interested users. The views and claims expressed in external internet sites are not necessarily those of NASA.

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Last Updated: November 13, 2007
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