HR 9024

Astronomers See an Enormous Coronal Mass Ejection… On Another Star!

Astronomers See an Enormous Coronal Mass Ejection… On Another Star!

For the first time ever, astronomers have witnessed a coronal mass ejection (CME) on a star other than our very own Sun. The star, named HR 9024 (and also known as OU Andromeda,) is about 455 light years away, in the constellation Andromeda. It’s an active, variable star with a strong magnetic field, which astronomers say may cause CMEs.