Cosmic microwave background radiation is the oldest light in the universe, and it is the heat left over from the Big Bang. It provides a snapshot of the early universe and an important tool for validating cosmological models, including dark matter.
Cosmic microwave background radiation is the oldest light in the universe, and it is the heat left over from the Big Bang. It provides a snapshot of the early universe and an important tool for validating cosmological models, including dark matter.