Question

How stars form from nebulae?

Answer 1

formed doe to large cloud of gas and dust ones small star have formed inside the clouds
which make light visible these stars formed a reflection of nebulae

Answer 2

A star is born when atoms of light elements are squeezed under enough pressure for their nuclei to undergo fusion. ... The majority of the gas in nebulae consists of molecules of hydrogen and helium--but most nebulae also contain atoms of other elements, as well as some surprisingly complex organic molecules.