NASA's pioneering Dragonfly mission has passed its critical design review, keeping it on track for a 2028 launch to the ...

"With only lunar soil and a basic ingredient from the sun — which is always spitting out hydrogen — there's a possibility of ...

Recent flybys of the fiery world refute a leading theory of its inner structure — and reveal how little is understood about ...

Skywatchers worldwide are in for a charming cosmic display before the sun rises Friday, as three celestial bodies will appear ...

View a brilliant morning star, enjoy dark skies during New Moon, and take in plenty of deep-sky targets in the sky this week.

In the years since, Hubble has gathered more than 1.6 million observations and 430 terabytes of data. The telescope has ...

The morning of April 24 will give rise to a striking mini-planetary parade, as Mercury, Venus, Saturn, Neptune, and Earth's ...

By contrast, Deimos is tiny, with a radius of 6 km, and quite a bit further out, more than 23,000 km from the surface. It is ...

NASA's Europa Clipper mission has launched to study Jupiter's icy moon Europa, which may harbor a potentially habitable ocean ...