Add Yahoo as a preferred source to see more of our stories on Google. This artist’s concept shows the red supergiant star Betelgeuse and an orbiting companion star creating a wake in the larger object ...

Betelgeuse, one of the brightest stars in the sky, may have a secret sunlike companion that drives the star’s mysterious six-year-long "heartbeat," new research suggests. When you purchase through ...

Astronomers have long searched for clues that a hidden companion star sits out of view near the red supergiant star Betelgeuse. Now, they’ve uncovered a new piece of evidence: a trail like the wake ...