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Methods of measuring radiation or ionizing is called Dosimetry. The cosmic microwave background, which is left over from the Big Bang, permeates all of space with a temperature of 2.735 kelvin, as measured by the NASA satellite COBE.
Main:
Cosmic microwave background radiation,
Galaxy formation and evolution,
Magnitude,
Universe
Cosmology:
Big Bang,
Non-standard cosmology
Physics:
Dark matter,
Dirac sea,
Irradiation,
Radiocarbon dating,
Sunyaev Zeldovic Effect
Other:
List of astronomical topics,
Timeline of cosmic microwave background astronomy,
Timeline of other background radiation fields,
Timeline of the Big Bang
See also
External links