Not really. It's about the universe in all of its splendor.
Basically, at the beginning he shows how big our galaxy is. He gives simple facts, such as a lightyear is 6 million miles, our solar system has 250 billion stars, etc. Then he asks why people of religion contradict themselves as to why they teach God made the universe and then ignore it (the universe). He states that if there was indeed a God, he would want us to understand the universe and be more knowledgable about it, yet the very essence of religion is against that.
The rest is a ton of stuff that is too powerful for me to summarize.