Ariel, one of Uranus' icy moons, may once have concealed a vast ocean more than 100 miles (170 kilometers) deep beneath its ...

These Martian dunes in Mars' northern hemisphere were captured from above by NASA's Mars Reconnaissance Orbiter using its ...

University of Arkansas researchers have discovered geological formations on Mars that suggest the planet may have once had an ...

A paper from NASA scientists and other researchers explores whether an asteroid with a 4% chance of hitting the moon should ...

Uranus’ moon Ariel may look like a frozen, airless world today, but new research suggests that beneath its icy crust, it may once have held an ocean more than 100 miles (170 kilometers) deep. That ...

This peculiar behavior has long fascinated scientists, particularly after NASA’s Voyager 2 flyby of Uranus in 1986. The ...

Saturn's moon, Enceladus, could harbour alien life deep within its underground oceans, according to the European Space Agency ...

For decades, Uranus baffled scientists because it seemed to have no internal heat. Now, new computer modeling shows the ...