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Stars Leave Something Behind When They Die. Majority Of Them Become White Dwarfs–Dense Stellar Remains With Temperatures That Reach 100,000 Kelvin, While Some Stars Explode In A Supernova, Turning Into A Black Hole Or A Neutron Star. The White Dwarf Remnants Are Said To Be The Main Source Of Carbon, A Crucial Element For Life.

Astronomers have found the source of life in the universe

https://www.inverse.com/science/carbon-from-white-dwarfs

New observations of white dwarf stars reveal their stellar contribution to carbon atoms in the cosmos, one of the building blocks of life.