User:Alaminhabibul



=  Astronomy   is a natural science that is the study of celestial objects (such as moon s, planet s, star s, nebula e, and galaxies ), the physics, chemistry , and evolution of such objects, and phenomena that originate outside the atmosphere of Earth , including supernovae explosions , gamma ray burst s, and cosmic background radiation. =

= Astronomy is one of the oldest sciences. Prehistoric cultures have left astronomical artifacts such as the Egyptian monuments and Nubian monuments, and early civilizations such as the Babylonians , Greeks , Chinese , Indians , Iranians and Maya performed methodical observations of the night sky. However, the invention of the telescope was required before astronomy was able to develop into a modern science. Historically, astronomy has included disciplines as diverse as astrometry, celestial navigation , observational astronomy, and the making of calendar s, but professional astronomy is nowadays often considered to be synonymous with astrophysics. =