The age of the universe is estimated by ____.
A) the temperature of the universal background radiation
B) the age of comets formed in interstellar space
C) the rate at which galaxies are moving away from one another
D) the age of subatomic particles as determined by radioactive decay
E) the age of the sun

Question

Quizplus · Accepted Answer

The age of the universe is estimated through expansive observations and calculations of the rate at which galaxies are moving away from each other. This is known as Hubble's law, which involves the redshift of light from distant galaxies. The estimated age of the universe is currently about 13.8 billion years.

The Age of the Universe Is Estimated by ____