Chapter 14, Problem 35AC

To determine

The age of universe as indicated by microwave radiation from space, measurements of the expansion of the universe, the age of the oldest stars in the Milky Way galaxy and ratios of radioactive decay products.

$\text{6,000 years}$.

$\text{ 4}\text{.5 billion years}$.

$\text{13}\text{.7 billion years}$.

$\text{ 100,000 billion years}$.