Strong evidence for an original Big Bang,which "created" our universe,comes from
A) the very high flux of 21-cm radio energy,coming from the atomic hydrogen atoms produced in the explosion.
B) the rapid motions of some nearby stars,such as Barnard's star.
C) the amount of gas and dust in the solar neighborhood.
D) a background "glow" of microwaves,with blackbody temperature of about 3 K.

Question

Quizplus · Accepted Answer

The background "glow" of microwaves, with blackbody temperature of about 3 K, provides the strongest evidence for the Big Bang theory as it is believed to be the electromagnetic remnant of the Big Bang itself. This radiation is observed in all directions and is consistent with a universe that began in a hot, dense state and has been cooling and expanding ever since.

Strong Evidence for an Original Big Bang,which "Created" Our Universe,comes