Cosmic Background Radiation

Signals from the Cobe spacecraft are sent out of space
Theories are confirmed by observation. The existence of radiation (weak) confirms the Big Bang Theory. Temperature is close to 2.7 K above absolute 0. Before it was higher.
{Goes 1: 100,000. Cobe: should have perfect thermal spectrum, should be isotropic (disperses equally in various directions). CBR confirmed by various sources, like stars, galactic}