"The extent of the tail is gargantuan, stretching up to 9 million kilometers [5.6 million miles] long," said MIT astronomer Marc Hon.

Learn why the planet, BD+05 4868 Ab, is only the fourth such discovered and will disappear in one to two million years.

A giant sequoia located in Sequoia National Park in California, the General Sherman is 52,500 feet in volume and is more than ...

The stellar wind spreads the dust particles ahead and behind the world. Its loss of mass rate is estimated to be 10 Earths ...

Astronomers have spotted a small rocky planet that orbits perilously close to its host star disintegrating as its surface is ...

The astronomers spotted the planet using NASA's Transiting Exoplanet Survey Satellite (TESS), an MIT-led mission that ...

We were doing the typical planet vetting, and I happened to spot this signal that appeared very unusual.” An orbiting ...

A newly discovered green comet tracked by telescopes has likely broken apart as it swung by the sun, dashing hopes of a naked ...

The annual Lyrid meteor shower will peak Monday, April 21, as the Earth passes through one of the oldest known comet debris ...

Here’s a little spoiler for next month’s Cosmic Calendar: early May will see the return of the Eta Aquarid meteor shower. The ...

Lyrid's peak is forecast to last for two nights beginning Monday, with bright fireballs visible from the West Coast. Here's what to know.