Nation & World News; Red giant star goes supernova — scientists observe it just as it occurs, for the first time ever. Published: ; Jan. 11, 2022, 4:26 p.m.

An explosion seen in the cosmos in the early 1600s may actually be an "Alien Type Ia supernova", according to a new paper. In ...

A red supergiant star transitions into a type II supernova in this animation. Credit: W. M. Keck Observatory/Adam Makarenko | ...

For example, another Milky Way red giant known as VY CMa, located 3,900 light-years away from Earth in the constellation Canis, is thought to be much closer to the moment of its death than Betelgeuse.

Betelgeuse, a red giant about 500 light-years away, is nearing the end of its life and will eventually explode as a supernova. This event will be spectacular, visible even during the day, and ...

Stock image of a supernova. Supernovas completely destroy a star. ISTOCK / GETTY IMAGES PLUS. Systems like T CrB are of special interest to astrophysicists outside of this strange cosmological ...

More recently, astronomers classified Betelgeuse as a red giant, a star that is near the end of its life. That meant Betelgeuse is due to explode as a supernova sometime in the next few hundred ...

Betelgeuse experienced a weird cosmic event in 2020 that led to some supernova speculation. It's doing it again — but it's (probably) just settling down.

The temperature of hydrogen in the outermost part of the envelope of a red giant star is 3,800-4,000 K. Neutral hydrogen in this cooler region absorbs the heat from the interior.

Stars of its type tend to live fast and die relatively young; whereas our star is middle-aged at about 5 billion years, Betelgeuse is 10 million years old and could go out in a supernova explosion ...

A supernova is a stellar explosion, which occurs when the lives of some really massive stars come to an end. ... it was a red super-giant with a radius equal to 500 times that of the Sun, ...

This very active red giant star ejects bullet-like clumps of plasma toward its poles every 8.5 years, and it also has coughed out six large rings in its equatorial plane over the last 2,100 years.