Betelgeuse likely won't die as a supernova in your life. But astronomers are finding 'red nova' stars that may soon violently explode.

· The red super-giant star Betelgeuse has dramatically dimmed, leading to speculation of an imminent supernova. But that may not happen for 1 million years.
· A more common but less widely known way for stars to die is a red nova: When a bigger star rips a smaller one to shreds and gobbles it up.
· Astronomer Larry Molnar...