Stars are born, live, and die in a cycle of creation and destruction from "summary" of Astrophysics for People in a Hurry by Neil deGrasse Tyson
Stars, those glowing orbs of light that dot our night sky, are not eternal. They are born, they live, and eventually, they die. This cycle of creation and destruction is a fundamental aspect of the universe that we inhabit. The birth of a star begins in a cloud of gas and dust known as a nebula. Within this nebula, gravity slowly begins to pull together the particles, causing them to coalesce into a dense core. As this core grows, the pressure and temperature within it increase, eventually reaching a point where nuclear fusion ignites. Once a star is born, it enters a phase of stability known as the main sequence. During this time, the star burns steadily, radiating heat and light into space. This phase can last for billions of years, depending on the size of...
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