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

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

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

it has more than all of the other planets combined. Its largest moon, Titan, is the second-biggest moon in the solar system, after Jupiter's Ganymede. It's also larger than the planet Mercury.

This is the closest point to Earth in its orbit around our planet, bringing it some ... 9:34 P.M. The Moon now passes 5° north of Jupiter at 2 P.M. EDT The pair is visible in the evening sky ...

NASA's Juno spacecraft took three images of Jupiter's Great Red on Feb. 12 ... An artist's concept of dwarf planet Eris and its moon Dysnomia. The Sun is the small star in the distance. This Hubble ...

There are a lot of things in Earth's night sky, and every now and again, they line up in such a way to give us all a little ...