Cosmic Microwave Background Articles

Tag Archive for: cosmic microwave background

Evidence for Big Bang

Is there Evidence for the Big Bang?

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Key PointsHubble's law (redshift of galaxies) and Doppler effect provides direct evidence for the universe expanding away from our reference point,…
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A Poor Man’s CMB Primer: Cosmic Acoustics

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 Before decoupling, photons and charged particles were in good thermal contact: though the primordial plasma might have varied in temperature…
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A Poor Man’s CMB Primer: Bumps on a Blackbody

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 Astronomers Arno Penzias and Robert Wilson discovered the cosmic microwave background in 1965. They were not looking for it.They were…
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A Poor Man’s CMB Primer: The Birth of a Cosmic Background Radiation

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 The early universe was hot. So hot, in fact, that nuclei boiled. The great thermal energy of the universe overwhelmed the confining efforts…
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A Poor Man’s CMB Primer: Orientation of the Universe

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 This is a picture of the cosmic microwave background:Fig 1. The cosmic microwave background as seen by the European Space Agency's…