New simulations suggest that dozens of ultra-faint “ghost” galaxies may be orbiting the Milky Way, hidden from current ...

A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...

A mystery interstellar object discovered last week is likely to be the oldest comet ever seen – possibly predating our solar system by more than three billion years, researchers say. The "water ...

Astrophysicists suggest our galaxy may lie inside a "cosmic void" - offering a new explanation for the universe’s conflicting ...

The third object known to have entered the Solar System from interstellar space has an origin unlike either of its ...

The idea that gravity shapes the universe into nicely bounded superclusters is being overturned by a finding so gargantuan ...

It's the so-called "Milky Way season" in the Northern Hemisphere. Here's everything you need to know about viewing the galaxy ...

A groundbreaking new survey from China’s LHAASO observatory has unveiled powerful ultrahigh-energy gamma-ray emissions across ...

Admire our galaxy’s dramatic galactic core—a sparkly bulge of stars and gas—while summer’s short ‘Milky Way season’ lasts ...

By looking at the shifting of stars in photos from the New Horizons probe, astronomers have calculated its position in the ...

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

Stargazers may catch a cosmic light show this Fourth of July weekend when the Milky Way appears in the night sky across the ...