In this entity, the Sunyaev-Zel'dovich effect is the result of inverse Comp
In this entity, the Sunyaev-Zel'dovich effect is the result of inverse Compton scattering. The WMAP and COBE satellites studied this entity which was first observed by AT&T scientists Arno Penzias and Robert Wilson when they were trying to fix an early microwave satellite receiver. Observations of its near perfect (*) blackbody spectrum place the temperature of the universe at about 2.7 Kelvin. For 10 points, name this all pervasive entity, often described as the "echo" of the big bang.
In this entity, the Sunyaev-Zel'dovich effect is the result of inverse Compton scattering.
{CMBR} [or cosmic {microwave background} radiation; or {background radiation}]