Why NASA scientists want to go (back) to this most inhospitable planet.
A new study identifies frozen water just below the Martian surface, where astronauts could easily dig it up.
A new study finds the Greenland Ice Sheet is melting at a rate that matches the worst-case climate models, which project that flooding will affect millions of people by 2100.
They look like twins. But under the hood, the rover currently exploring the Red Planet and the one launching there this summer have distinct science tools and roles to play.
Among the cargo is an upgraded set of tools for NASA's Cold Atom Lab, a facility for probing nature at the very smallest scales and developing new quantum technologies.
The spacecraft discovered that asteroid Bennu could be active, consistently discharging particles into space.
An elephant seal helps scientists understand how the ocean transports heat between its upper and lower layers - important for estimating how much heat the ocean can absorb.