The stars we see when we look up at night haven’t been here forever.
Some of them are quite young, in fact, and others are candidates to explode as supernovae.
Stars are continually being born and dying in our galaxy, with the chemically enriched matter that is the byproduct of the fusion that powers the stars being ejected into space and seeding the gas clouds that collapse into the next generation of stars, planets, and possibly life.
