In cosmology, cosmic microwave background (CMB) radiation (also CMBR, CBR, MBR, and relic radiation) is a form of electromagnetic radiation that fills the universe. Unlike a traditional optical telescope, whereby the space between stars and galaxies appears pitch black, the radio telescope, exhibits a faint background glow between celestial bodies, almost exactly the same in all directions, that is not associated with any star, galaxy, or other object. This glow is strongest in the microwave region of the radio spectrum, hence the name cosmic microwave background radiation. Most scientists believe the universe was created in the Big Bang around 13.7...
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