Astronomers have confirmed the third interstellar object on record is dashing through our solar system. Dubbed 3I/ATLAS, it appears to be a comet and is thought to have flown in from the direction of ...

Scientists believe the Milky Way contains up to 400 billion stars and at least as many planets. The largest galaxy known, IC 1101, has more than 100 trillion stars. Step outside on a clear night and ...

CAPE CANAVERAL, Fla. (AP) — Astronomers say they've spotted an object in our solar system that's believed to be from another ...

The Milky Way's core will be visible this month and through August. Here's what Tennessee stargazers should know.

Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

Earth and our entire Milky Way galaxy may sit inside a mysterious giant hole which makes the cosmos expand faster here than in neighboring regions of the universe, astronomers say.

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

We know black hole mergers occur because we can detect the resulting gravitational waves. But when trying to piece together ...

It's only the third time that experts have spotted an object in the Milky Way that's come from a different solar system. Find out more here.

Using gravitational microlensing, scientists have discovered a rare, large planet at the edge of the Milky Way. The planet is ...

An "interstellar object" is speeding toward the inner solar system, where Earth is located, astronomers have confirmed.