Final answer:
The Cosmic Microwave Background Radiation (CMBR) in the microwave region is consistent with the Big Bang model.
Step-by-step explanation:
The Cosmic Microwave Background Radiation (CMBR) is consistent with the Big Bang model. The CMBR is the thermal radiation left over from the early universe and it appears as a glow in the microwave region of the electromagnetic spectrum.
The Big Bang created an incredibly energetic explosion about 10 to 20 billion years ago. As the universe expanded and cooled, galaxies formed and the remnants of the explosion became cold.
The CMBR, which has a characteristic temperature of 2.725 K, can be detected coming from any direction in space not obscured by other sources, making it compelling evidence for the Big Bang.