 Double Agent Stamps!
Sidney raises her hand. "The Steady State Theory says the universe does not change over time in a major way. It has existed for millimillennium the way it does now and will continue to do so into the future. On the other hand, the Big Bang Theory says over 12 to 14 billion years ago the universe was much smaller. It was in a hot dense state back then. Over time the universe has expanded and cooled down to the larger size it is today."
"For the Steady State Theory to work, new matter must be created continually using hydrogen to keep the average density of matter equal over time." |