A very long solar filament that had been snaking around the Sun erupted with a flourish. The bright light of a solar flare on ...

"It's been such a puzzle that there was liquid water on Mars, because Mars is further from the sun, and also, the sun was ...

CAPE CANAVERAL, Fla. (AP) — NASA’s two stuck astronauts took their first spacewalk together Thursday, exiting the International Space Station almost eight months after moving in.

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

NASA’s Solar Dynamics Observatory (SDO) has detected a colossal coronal hole on the Sun’s surface, stretching an estimated 500,000 miles across—a size equivalent to 62 Earths lined up side by side.

SpaceTV-1, a set of Ultra High Definition 4k cameras from space streaming company Sen, was delivered to the International Space Station (ISS) last year, and is now broadcasting live views of Earth and ...

NASA’s Parker Solar Probe flew closer to the sun than any spacecraft ever has, surviving expected temperatures of 1,800 ...