Using the Hubble Space Telescope (HST), astronomers have observed a nearby ultra-diffuse galaxy designated F8D1. The new ...

"We found that hundreds of exoplanets are larger than they appear, and that shifts our understanding of exoplanets on a large ...

A massive doomed exoplanet on a death spiral toward its parent star has three possible catastrophic fates. A massive planet ...

Vesta is passing an 8th-magnitude field star, offering a great opportunity to see the space rock’s motion on the sky over just a few nights.

We measure the extremely long distances between things in space by light years. A light year is the distance that light travels in one Earth year. Light travels at about 300,000 kilometres per second.

Some of these open clusters are pretty famous, such as the Pleiades cluster, also known as the Seven Sisters. This is ...

People have been asking why space is dark despite being filled with stars for so long that this question has a special name – Olbers’ paradox. Astronomers estimate that there are about 200 ...

NASA's Hubble Space Telescope and NASA's Chandra X-ray Observatory have teamed up to identify a new possible example of a ...

Stars don't just shine — they hum with hidden vibrations. Like earthquakes, ripples of gas on a star's surface — referred to as stellar quakes — offer clues about what lies beneath.