Mars, Venus, Jupiter, and Saturn can be spotted without special equipment, with Uranus and Neptune requiring a telescope.

Alignments of five or more planets are rare—there will be two more featuring five or more planets this year, but after that ...

Jupiter's Great Red Spot storm, which usually appears dark-red, can be seen shining a lurid blue color in an ultraviolet image of the planet.

The shells of carbon-rich dust are expanding outward into space at the breakneck velocity of 1,600 miles per second.

The solar system consists of 8 planets, including Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Each ...

The six planets will be visible in the days immediately leading up to Jan. 21, and for about four weeks afterward. Mars, ...

The Alinda asteroid will be visible with binoculars in a 'once in a decade' event as it brushes past Earth, with its return ...