A star system in our own galactic neighborhood is poised to put on a show so bright it could briefly rival the planets and even shine in daytime skies. Astronomers are watching for a sudden eruption ...

Add Yahoo as a preferred source to see more of our stories on Google. Artist's concept shows the red supergiant star Betelgeuse and an orbiting companion star. The companion, which is orbiting ...

For years, Betelgeuse’s sudden dimming and erratic behavior puzzled astronomers and fueled speculation about an imminent explosion. New observations and models now show what was actually happening ...

For more than a century, Betelgeuse has looked like a star with a secret. It swells and fades on a six-year rhythm that never quite made sense. The star, about 650 light-years away in space, is old, ...

Using new observations from NASA’s Hubble Space Telescope and ground-based observatories, astronomers tracked the influence of a recently discovered companion star, Siwarha, on the gas around ...