Study shows LIGO’s 40-kilogram mirrors can move in response to tiny quantum effects, revealing the “spooky popcorn of the universe.”

Neptune-sized planet may be remnant core of a much larger planet.

Astronomers have found a previously unseen type of object circling a distant star.

A huge star has disappeared - did it become a black hole?

Astronomers say big cool patches on the Betelgeuse star likely drove its surprise dimming last year.

Skywatchers photographed the "ring of fire", where the moon passes between the Earth and the Sun.

Signal from 500 million light years away is the first periodic pattern of radio bursts detected.

When it comes to commercial space tourism, suborbital flight are the first frontier. But what are the risks? Are there health requirements? What should you know before taking such a way-out trip?

Discovery made through the Disk Detective project could help the search for new planets.