What is a star thought to be born?

Answer 1

A star is thought to be born in a molecular cloud, a dense region of gas and dust in space. Under the influence of gravity, these materials collapse and clump together, leading to increased temperature and pressure at the core. When the core temperature becomes high enough, nuclear fusion begins, converting hydrogen into helium and releasing energy, which marks the birth of a new star. This process is often depicted in a sequence known as stellar formation, transitioning from a protostar to a main-sequence star.