What makes the star remarkable is its location. Siwarha appears to orbit so close that it never leaves Betelgeuse’s ...

Researchers found evidence that a companion star may be influencing Betelgeuse, explaining why the star’s brightness changes ...

It will be a spectacular event, but calculating when it will happen is a tricky business. Every now and then, in recent observations, Betelgeuse has grown dimmer or brightened, prompting speculation ...

The gas around the red giant star Betelgeuse revealed the effects of a newly found companion star, Siwarha, likely circling ...

Learn how Betelgeuse's atmosphere has been altered by its companion star, which has left behind a trail of expanding gas.

For decades, astronomers have tracked changes in its brightness and surface features in hopes of figuring out why the star ...

A multi-observatory study led by the Center for Astrophysics | Harvard & Smithsonian has characterized the impact of a newly ...

Astronomers and scientists love Betelgeuse because it shines so brightly. While most stars appear as tiny points of light, ...

Using new observations from NASA’s Hubble Space Telescope and ground-based observatories, astronomers tracked the influence ...