Not exact matches
Satellites collect data from the
radiation emitted from the Big Bang, which is called the Cosmic Microwave
Background, or CMB.
The most powerful test of its geometry is the variation in the cosmic microwave
background, the
radiation emitted shortly after the big bang.
A full - sky map produced by the Wilkinson Microwave Anisotropy Probe (WMAP) showing cosmic
background radiation, a very uniform glow of microwaves
emitted by the infant universe more than 13 billion years ago.
However, even when many dark celestial bodies
emit radiation, the emission may be observed just as «cosmic
background»
radiation if the sensitivity and resolution of the telescope in use is insufficient.
Cosmic
background radiation — that amazing «first light»
emitted when the Universe was only a few hundred thousand years old — exists mainly in the form of microwaves.
Second Law: A thin hot gas in front of a cooler
background emits radiation at a discrete set of isolated wavelengths.