National Aeronautics and Space Administrion

Since its inception in 1958, NASA has accomplished many great scientific and technological feats in air and space. NASA technology also has been adapted for many nonaerospace uses by the private sector. NASA remains a leading force in scientific research and in stimulating public interest in aerospace exploration, as well as science and technology in general. Perhaps more importantly, our exploration of space has taught us to view Earth, ourselves, and the universe in a new way. While the tremendous technical and scientific accomplishments of NASA demonstrate vividly that humans can achieve previously inconceivable feats, we also are humbled by the realization that Earth is just a tiny "blue marble" in the cosmos. Check out our "Thinking About NASA History" folder online as an introduction to how history can help you.

Sunday, February 26, 2012

Could One of these Planets be the Home of ET

The most Earth like planets are often not the most welcoming for life. There doesn't have to be water as we know it present.

Titan, Mars then Gliese 581D filial Earth in ability to support life. Titan has a vast lake of liquid hydrocarbons and has a surface temperature of negative 300 degees.

Gleise 581D is the only exo-solor planet astronomers consider Earth-like because it is rocky and orbits a cool dim star.

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