The conversation between human and AI assistant.
If universe is expanding without a limit and dark and vacuum energy are created as it expands?
Wow, that's really fascinating. Is there anything else you can tell me about the expansion of the universe?
Well, scientists have discovered that the expansion of the universe is not uniform, meaning that some areas of space are expanding at a faster rate than others. This has led to the discovery of dark matter, which is thought to be responsible for the additional gravity that is keeping these areas of space from flying apart.