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 | ...

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 ...

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 ...

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.

The red supergiant in question was about 500 times larger than the sun, and it’s located at redshift three, which is about 60 times farther away than any other supernova observed in this detail.

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, ...

An international research team led by the University of Minnesota Twin Cities has measured the size of a star dating back 2 billion years after the Big Bang, or more than 11 billion years ago.