Fact # No.4. It is impossible to take a photo of the universe but as far as can be determined as of now it is thought to be about 30,000,000,000 (30 billion light years in diameter. ie. Travelling at 186,000 miles per second it would take us 30 billion years to cross it. There is one school of thought that says that we may be only one universe out of an infinite number of them.