Sirius is a blue giant, which burns through its fuel quickly and lives only a relatively short period of time. Yet it has a white dwarf companion (Sirius B) and white dwarfs are the end result of stars like our Sun, which live for billions of years. How can a young blue giant have aContinue reading “How can a young blue giant have a white dwarf companion star that’s billions of years older?”
The post
This post was originally published on this site