A study suggesting the exoplanet K2-18b shows potential signs of alien life has been met with skepticism from the scientific ...

There’s more to studying outer space than looking through telescopes and analyzing the mineral compounds in samples collected ...

Astronomers have discovered that super-Earth exoplanets are more common across the universe than previously thought. While it can be relatively easy to locate worlds that orbit close to their star, ...

The HiRise camera is living up to its name, capturing a rare look at the veteran rover from way up in Martian orbit.

Astronomers have discovered that "super-Earth" planets may exist on wider orbits than previously thought — and this implies ...

Alien prequel Prometheus might have had two major plot problems, but both of these were solved 12 years later by a new ...

Voyager 1, shown in this illustration, has operated for decades thanks to a radioisotope power system. NASA via AP Benjamin Roulston, Clarkson University Powering spacecraft with solar energy may not ...