Unlike our Moon, they can keep water in oceans liquid for more than 4 billion years.

When it comes to the space sciences, nothing is quite as exciting as the search for alien life, and NASA thinks it has a good idea of where to look.

Recent observations suggest that scientists have identified potential microbial fingerprints in the atmospheres of other planets, raising intriguing questions about the possibility of alien life ...

Life may not get blasted off any of the known "super-Earth" worlds as readily as it can from our planet, scientists find. The discovery suggests that any intelligent aliens that develop on such ...

Looking for molecular evidence of life on other worlds is tricky, but a test based on the reactivity of carbon compounds ...

Scientists might have just found Earth's icy, distant cousin a few hundred light-years away. HD 137010 b is one of thousands of exoplanets, or planets that orbit other stars, and is potentially the ...

The best reason to send humans to Mars isn’t for guts or glory—or the construction of colonies to safeguard against existential Earth-bound risks. Instead it’s to answer a single, simple question: Is ...