Cosmic background explorer COBE satellite

Cosmic background explorer COBE satellite

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Credit: NASA/SCIENCE PHOTO LIBRARY

Caption: Artist's impression of the Cosmic Background Explorer (COBE) satellite, launched in November 1989. The satellite will study the structure & spectrum of the microwave background (the cold, faint echo of the radiation emitted during the Big Bang). The radiation was emitted when the universe was a hot fireball and initially had a spectrum characteristic of this temperature. As the universe expanded, the radiation cooled and now has a temperature of only 2.7 degrees Kelvin. Any fine structure found in the microwave background would indicate inhomogeneities in the primaeval fireball. These would have profoundly influenced the large-scale structure of the present universe.

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Keywords: artwork, astronomical, astronomy, astrophysics satellite, cobe, cosmic background explorer, detector, journey, journeying, journeys, microwave background, satellite, travel, travelling, travels

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