The Sun might have as many as 20,000 siblings according to a new study. But they're all spread out into space now.
Al-rich materials from a nearby core-collapse supernova should occur in the first 10years of the solar system. Therefore, at least one core-collapse supernova should occur within the duration of star formation in the Sun’s birth cluster,” the authors explain.
The massive stars that end their lives as core-collapse supernova explosions don’t live nearly as long as the Sun. They may live only a few million years, meaning they can form, explode, and die while other solar systems like the Sun’s are still forming. When they explode, they inject nearby solar systems with short-lived radionuclides includingThis schematic from the study shows the direct injection of SLRs into the early Solar System within the birth cluster.
So where does that lead us? That’s a lot of detailed information. Does it tell us how many siblings the Sun might have? Not exactly, but it does constrain the number.2010 study
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