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Why do we know #Betelgeuse may go #Supernova within the next few 100000 years, but most likely not soon? And why are we sure the Sun will be a safe star for Billions of years?
A brief primer #thread to Stellar Evolution. 1/
Sun: SDO. Betelgeuse: ESO/ALMA
#astronomy #Space
A brief primer #thread to Stellar Evolution. 1/
Sun: SDO. Betelgeuse: ESO/ALMA
#astronomy #Space
First thing to know is: stars are not all alike. They are big, small, bright, dim, have different colors and die different deaths. The quantity at the root of their diversity is their MASS. Stars have masses between roughly 0.1 & 100 times the Sun’s mass. Large ones are rare.2/
Here is the fundamental diagram of stellar evolution. It’s called the Hertzsprung-Russell Diagram (HRD). The further left you go, the hotter stars become. The further up you go, the brighter stars become. 3/
(Pic: ESO)
(Pic: ESO)
