Venus in Libra will square Pluto retrograde in Capricorn on Sept. 22, triggering power dynamics within your relationships.

By staring into the hellish landscape of Jupiter's moon Io -- the most volcanically active location in the solar system -- astronomers have been able to study a fundamental process in planetary ...

Although many lunar phenomena are one-night-only events, a ring around the moon is much less elusive. Also known as a lunar halo, a bright white ring of light around the moon can appear anytime ...

T he asteroid collision that killed the dinosaurs 65 million years ago may have been a major cosmic crack-up, but it was ...

The asteroid collision that killed the dinosaurs 65 million years ago may have been a major cosmic crack-up, but it was ...

Ganymede is one of the most complex of Jupiter’s nearly 100 moons—and indeed, one of the most intriguing worlds in the entire solar system. It is the only known moon with its own magnetic ...

That impact may have had a role in creating Pluto’s litter of five moons—Charon, Nix, Hydra, Kerberos, and Styx. Ganymede will be studied more closely still in 2034, when the European Space ...