Charles Darwin's Theory of Evolution helped to explain

how our solar system has changed over time.
the age of the earth.
how fossils are formed.
how living things change over time.

Darwin's Theory of Evolution explained how living organisms evolve and change over time through the process of natural selection. It helped to show how different species have developed and adapted to their environments over millions of years. It also helped to provide evidence for the theory of the age of the Earth, as well as the formation of fossils and the history of life on our planet.