Microbes appear to be dormant in permafrost in a region of Antarctica, which could deal a blow for the search for life in similar regions on Mars.
If habitable planets can form in globular clusters and survive for billions of years, life would have time to become complex.
A little statistics knowledge suggests we may be way underestimating a typical alien's stature.
The new image was created by combining multiple near-infrared images taken during a high-altitude flyby on November 13.
An inside look at the dust-analyzing instrument that will fly on NASA's upcoming mission to the ocean-harboring Jupiter moon.
In the search for Earth-like worlds beyond the solar system, Kepler-438b seems to have it all. Alas, its angry star is a poor host for any potential lifeforms.
Astronomers have found a rocky planet orbiting a small star that is within easy telescope views from Earth.
Europe's Rosetta mission has found that Comet 67P/Churyumov-Gerasimenko is spewing molecular oxygen into space -- why would this be a bad thing for the hunt for extraterrestrial life?
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