An international team of astronomers has employed NASA's Chandra X-ray observatory to perform the most detailed study of a ...

The stellar companion may help explain why the brightness of Betelgeuse, the red supergiant, is open to so much variation.

Astronomers have taken the first close-up image of a star beyond our galaxy, and it’s a “monster star” surrounded by a cocoon as it slowly dies.

According to the paper, the sample of identified candidates in the Andromeda galaxy consists of 134 yellow supergiants (YSGs), 62 blue supergiants (BSGs) and three red supergiants (RSGs).

More information: M. Marelli et al, 4XMM J181330.1-175110: a new supergiant fast X-ray transient, arXiv (2025). DOI: 10.48550/arxiv.2503.04009 ...