Day 60 of 365
March 1
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Space Cosmic Microwave Background Radiation
The cosmic microwave background (CMB) is the afterglow of the Big Bang, filling the universe with faint microwave radiation at 2.7 Kelvin. Discovered accidentally in 1964 by Penzias and Wilson, the CMB provides a baby picture of the universe at 380,000 years old. Tiny temperature variations in the CMB reveal the seeds of galaxies and test cosmological theories about the universe's origin and composition.
💡 Did you know?
About 1% of TV static on old analog televisions was actually CMB radiation - you were watching the echo of the Big Bang!
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