THE STAR BIRTH

Star birth:                                                                                                                 stars have been forming throughout the universe for most of its life. They  take shape in vast clouds where thousands of stars are born at a time . The clouds that give birth to the stars are cold and dense and consist mainly of hydrogen gas . the newly formed stars are huge spinning globes of hot , glowing gas  mainly hydrogen , with helium and small amounts  of other elements . much of this material is packed tightly into the stars cores ,and it is here that nuclear reaction release energy in the form of heat and light .                                                                                                                                                                                           How new star form :                                                                                              

The star forming process begins when the cloud becomes unstable and breaks up into fragments . gravity pulls the material in a fragment into an ever tighter clump . and the clump slowly forms a sphere as it shrinks , its core getting denser and hotter . eventually the pressure and temperature are so high that nuclear reactions begin, and the star starts to shine .