This post is part of a series featuring excerpts from Origins: Christian Perspectives on Creation, Evolution, and Intelligent Design by Deborah Haarsma and Loren Haarsma.
The dynamic changes and developments in the universe have been going on for a long time. In chapter 5 we described how geologists, over the past three centuries, have accumulated many kinds of evidence from rocks that the earth is billions of years old. In a similar fashion, over the past century astronomers have studied planets, stars, and galaxies and have found many strands of evidence that the universe is billions of years old. This consensus of astronomers is based on many independent measurements and has stood the test of time, a good indication that these results are reliable. In this section we’ll describe some of this evidence for the great age of the universe.