How do scientists estimate the age of the Universe?
A) By measuring the age of the oldest known asteroids
B) By measuring the relative motion of other galaxies
C) By measuring speed of light from distant stars

Question

Quizplus · Accepted Answer

Scientists estimate the age of the Universe by measuring the relative motion of other galaxies, specifically through the observation of the redshift of light from these galaxies, which indicates that the Universe is expanding. This expansion rate, known as the Hubble constant, helps estimate the time since the Universe began expanding, thus providing an estimate of its age.

How Do Scientists Estimate the Age of the Universe