Vovabulary # 11 : Stars

Star: a large, hot ball of gases, wich is held together by gravity and gives off its orn light
                          
         

Parallax:The apparent shift in an object`s location when viewed from two positions

                        

Light-year:The distance light travels in a year

                              

Constellation: A number of stars that appears to form a pattern
                        

Magnitude:The brightness of star

                                               

Nebula: A cluod of a gas and dust in space

                                                     


Supernova: A star that explodes
                              


Black hole: An object whose gravity is so strong that light cannot escape it