While Mars today only has a wispy remnant of an atmosphere, it may once have had one hundreds of times thicker with a ...

The NASA and ESA Mars Sample Return mission will send bits of the Red Planet collected by the Perseverance rover to Earth.

Last week NASA announced the "clearest sign of life that we've ever found on Mars". Amazing news, or a "crushing blow" for humanity?

A planetary scientist walks through the sensors and systems that went into the recent detection of potential biosignatures.

Did NASA find life on Mars? What NASA has found may be the strongest evidence yet that ancient microbial life once existed on ...

Late-stage planetary collisions reshaped Earth and its neighboring planets, delivering water, altering their atmospheres, and ...

High-energy particles zipping through the cosmos are harmful to life on Earth, but scientists think it could be food for ...

According to Dean Duffy, the new NASA administrator, a rock sample collected by the Perseverance rover was the "clearest sign ...

Sooner or later, a sizable asteroid could impact a populated area on Earth. How is the US, and the world, preparing?