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Add Yahoo as a preferred source to see more of our stories on Google. graphic illustrating astrobiology, showing simple microbes against a backdrop of stars. Astrobiology is the field of science ...

Add Yahoo as a preferred source to see more of our stories on Google. The claim: NASA just hired 24 theologians to assess how the world would react to discovery of extraterrestrial life The prospect ...

The National Academies of Sciences, Engineering, and Medicine are private, nonprofit institutions that provide expert advice on some of the most pressing challenges facing the nation and world. Our ...

When a Mars rover leaves a trail of tracks in the Martian dunes, is it a tragic imprint of human intrusion on a pristine alien landscape billions of years old, or the first hopeful sign of intelligent ...

A young discipline holds promise yet. In the 1960s, the evolutionary theorist George Gaylord Simpson rubbished the then-nascent science of exobiology, which concerned itself with life on places other ...

Humans might not be walking on Earth today if not for the ancient fusing of two microscopic, single-celled organisms called prokaryotes, NASA-funded research has found. By comparing proteins present ...

Are we alone in the universe? Sages and scientists, philosophers and poets have posed variants of this question since time immemorial. Today, we are formulating research programs that may someday ...

Nobody has yet seen an extraterrestrial, which may sound like a problem in establishing a science of astrobiology. But in the past 20 years or so, scientists have found clues that life may be quite ...