The upcoming year will offer a blood-red moon, spectacular meteor showers and the first glimpse of the sun’s corona since ...

On Saturday (Jan. 10), for example, we will see three satellites on one side of Jupiter (going outward from the planet: Ganymede, Io and Europa ), while the fourth ( Callisto) remains all by itself on ...

Jupiter, as always, is a dazzling object, shining among the stars of Gemini the Twins. It reaches opposition on Jan. 10; this ...

Meteor showers, eclipses, a planetary parade and 13 full moons will be visible in the night sky in 2026. Here’s when to see them.

It was one of humanity’s greater vanities that we ever questioned whether there are any planets in the universe beyond the eight in our little solar system. Our sun is a perfectly ordinary star, ...

The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their ...

On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just ...