What did the night sky look like to the dinosaurs?
Daniel and Kelly’s Extraordinary Universe
00:00
The Evolution of the Universe
The structure of the universe on a really, really big scale is dominated by dark energy. This thing tearing the universe apart, making it expand. It's not powerful enough to really affect the structure of our galaxy or of our relationship with nearby galaxies. The other issue is that 250 million years sounds like a long time, but it's only like 2% of the age of the universe.
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