Resolving the Red Controversy?

Resolving the Red Controversy?

-Donkey, from ShrekEarlier this week, I introduced you to the Red Controversy, the observations recorded around 2000 years ago in Europe asserting that the star, Sirius, appeared red. The way most Sun-like stars work is that they burn their fuel until they're exhausted, and then they expand tremendously and become red giants. If Sirius B was a red giant 2000 years ago, then the Sirius system would have appeared extremely bright and red! If there were another, denser star close to Sirius B (such as a neutron star or black hole), it could start stealing mass from the Red Giant! This process could be extraordinarily quick, and could feasibly strip Sirius B bare in just a few thousand years, leaving behind a cold, dead, white-dwarf core.

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