Astronomers have identified a massive red giant star with a newly detected companion that appears to be stirring up trouble in the system, reshaping gas and dust in ways that could end in a dramatic ...

A star that once symbolized constancy is suddenly looking far less steady. Astronomers are turning fresh attention to Polaris, the North Star, not for its poetic role in navigation lore but because ...

You live in a galaxy packed with black holes that never announce themselves. They do not blaze in X-rays or glow with stolen gas. They hide. Astronomers find them by watching the stars that dance ...