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	Image Gallery > Featured Image on November 18, 2009 Send to a friend  Enlarge image Keywords Big Bang  Cosmic Background Radiation  Birth of Stars  Explorer Missions  Astronomy Gift Shop 2010 Sky Almanac Pentax 10x50 binoculars McDonald Observatory logo cap Creation's Glow    This map of the universe shows tiny variations in temperature a few hundred thousand years after the Big Bang. These variations allowed matter to begin clumping together to form the first stars and galaxies. The map was compiled from data from COBE, a satellite launched in 1989. It measured variations in the cosmic microwave background, the faint "afterglow" of the Big Bang, which fills the universe. The differences in temperature are only a few thousandths of a degree, but are exagerrated in this map, in which the warmest temperatures are in red. [NASA] For more information, see our November 18 program. Show all images about: All Categories Earth, Moon and the Sun The Solar System Space Probes & Human Exploration Stars & Nebulae Astronomers & Observatories Galaxies & Cosmology Stargazing & Star Lore
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