Betelgeuse is one of the brightest stars in the night sky, and the closest red supergiant to Earth. It has an enormous volume ...

The fact that Betelgeuse is one of the brightest stars in the sky over Earth, visible with the naked eye, has made it one of ...

It is Betelgeuse and for hundreds of years astronomers have puzzled why its twinkle grows lighter and then dimmer over time.