By comparison, our own Milky Way is thought to house between 100 and 400 billion stars ... galaxy—most likely its satellite ...

Around 50 million years ago, a blue dwarf galaxy shot through the center of an enormous galaxy more than twice the size of ...

Scientists have officially given a name to the largest solar structure in the known universe. Astronomers have found the ...

This artist's concept visualizes a super-Neptune world orbiting a low-mass star near the center of our Milky Way galaxy.

Astronomers have discovered a fast-moving star potentially carrying a planet across space at 1.2 million miles per hour, ...

A bouquet of thousands of stars in bloom has arrived. This composite image contains the deepest X-ray image ever made of the ...

ASTRONOMERS may have just found the fastest exoplanet system in the galaxy – a super-Neptune world orbiting a hypervelocity ...

A research team may have discovered a star with an exoplanet that is so fast that both will leave the Milky Way.

The Bullseye galaxy earned its nickname thanks to its wild number of rings. A smaller galaxy shot through its heart 50 ...

The image of supermassive black hole Sagittarius A * was created using data from the Event Horizon Telescope Collaboration. At the same time several telescopes, including the Chandra X-ray Observatory ...