November’s major meteor shower ramps up as the Moon reaches perigee shortly before its Full phase in the sky this week.

Mars is tantalizingly similar to Earth in many ways, but especially in its surface features, which often resemble Earth deserts to an eerie degree. Both Earth and Mars share features such as valleys; ...

Sixth test flight of the largest rocket to ever fly will feature another attempt at catching the Super Heavy booster and ...

Every constellation has something within its borders worth tracking down, if you just look hard enough. Here are five to ...

This list of commonly confused terms in astronomy will help you better understand the cosmos and the common phenomena we see ...

As the ISS ages and is eventually decommissioned, private companies may operate the orbital platforms of the future.

Rainbows may be a trick of the eye, but they’re also based in fascinating optical physics. Here's how they work and why we ...

A six-mile-thick crust of methane trapped in water ice could explain many of the saturnian moon's weird properties ...

NASA has identified nine locations near the Moon’s south pole for the first crewed lunar landing since Apollo 17.

A century ago this month, a brash astronomer leaked a discovery that opened our view to the cosmic distance scale and the ...

Mars is brightening and the giant planet Jupiter is reaching its best apparition in a decade for Northern Hemisphere ...

Astronauts have voted from the space station since 1997 and have cast ballots in nearly every U.S. presidential election ...