We've known for over 30 years that there are other stellar systems in our galaxy, but we don't have any idea how many there are.

Astronomers have discovered a rare solar system in the Milky Way with six planets orbiting in perfect rhythm like a cosmic orchestra.

Astronomers have spotted 3I/ATLAS, just the third interstellar object ever seen in our solar system. Bigger, faster, and possibly far older than ‘Oumuamua or Borisov, this icy traveler could help ...

Interstellar comet 3I/ATLAS shines in the sharpest view yet captured by the Hubble Space Telescope, helping astronomers ...

NASA’s Hubble Space Telescope has snapped images of a recently discovered interstellar visitor hurtling through our solar ...

Our galaxy is a member of the Local Group — a small collection of galaxies, of which the Milky Way and Andromeda galaxies are the two largest. About 50 smaller galaxies surround them.

Travel through time to witness some of the most remarkable episodes in our solar system's history, uncovering its ancient ...

If our sun were replaced with a black hole of the same mass, our solar system would orbit similarly to how it does now, but it would be a lot colder.

The Kepler Space Telescope found the oldest solar system in the galaxy. While digging through backlogged data from the Kepler telescope, scientists found Kepler-444, an 11.2 billion year-old star ...

A long time ago in an arm of the galaxy about three kiloparsecs away, our Solar System began to take shape.