Astrobiology is the study of life’s origins and how extraterrestrial life might develop on other planets in and beyond our solar system. These news stories will introduce you to all the various aspects of astrobiology. We cover everything from the chances of finding bacteria on Mars or in the subsurface oceans of Europa and Titan, to the characterization of habitable exoplanets, to the search for extraterrestrial intelligence (SETI) such as signals from advanced civilizations that might be broadcasting their existence. This field of study has no extraterrestrial subjects – yet! – but that’s not stopping researchers from investigating what kinds of alien life might be possible.

Mars from Phoenix lander

Is Mars Too Salty for Life?

A just-published study, coincidentally appearing as Phoenix prepares to get the dirt on Martian habitability, argues that the Red Planet's soil is at least 10 to 100 times saltier than Earth's oceans.