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Cosmic Queries – Cosmic Collisions

StarTalk Radio

The Sound Effects, Part Three of Our Cosmic Queries

4min Snip

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A recent published work suggests that when two progenitor galaxies collided head on, their dark matter and stars would have sailed past each other. The galaxy collision is one of the most beautiful balletic things you've ever seena. Gas clouds cannot move through other gas clouds without consequence. Why are you a solid object, chuck? Because your molecules are sticking, sticking to each other in some way that turn you into chuck. And it's like two hot marsh mellows touching each other. They stick, right?

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