How do astronomers know that the age of the solar system is about 4.5 billion years old?
A) radioactive dating of all the rocks on Earth shows that age
B) they estimate that age from the number of comets that are still located in the Kuiper Belt
C) radioactive dating of the primitive meteorites indicates they have that age (since they are left-over building blocks of the solar system)
D) they estimate the date from the number of impact craters on the Earth
E) they have the warranty book for each planet, and it tells you when the unit was manufactured

Question

Quizplus · Accepted Answer

Astronomers use radioactive dating of primitive meteorites to determine the age of the solar system since these meteorites are believed to be left-over building blocks of the early solar system. The age calculated from this method gives an estimate of about 4.5 billion years.

How Do Astronomers Know That the Age of the Solar