Uncommon Descent Serving The Intelligent Design Community

NASA's definition of life

What should we look for, seeking life on other planets?

Researcher's view: "it’s more than likely that the chemistry that led to the existing biology on Earth is no longer evident in the biochemistry we see. This means it may be impossible to reverse engineer what prebiotic chemistry on early Earth—or another planet—might have looked like solely from the life that’s present today. " Read More ›