Star Trek: Discovery is a science fiction television series.
 In 1913, the Hertzsprung-Russell diagram was developed, propelling the astrophysical study of stars
=== Star formation ===The formation of a star begins with gravitational instability within a molecular cloud, caused by regions of higher densityoften triggered by compression of clouds by radiation from massive stars, expanding bubbles in the interstellar medium, the collision of different molecular clouds, or the collision of galaxies (as in a starburst galaxy)

