What is the average temperature of the universe?

1 Answer
Nov 17, 2015

It is about 2.73 Kelvin.


These results come from the measurements by COBE.
The Cosmic Background Explorer (COBE) was a satellite. Its goals were to investigate the cosmic microwave background radiation (CMB) of the universe and provide measurements that would help shape our understanding of the cosmos.

It's findings supported the claims of the big bang theory.