When did the first terrestrial planets form? How can galaxies collide when the Universe is expanding? Do black holes have Lagrange points? Answering all these questions and more.

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00:00 Start
00:25 When would the first terrestrial planets have formed?
04:40 Did humanity stall with spaceflight?
11:44 If the Universe is expanding, how can galaxy crash into each other?
15:12 How can a teenager help in space exploration?
19:06 Do black holes have Lagrange points?
21:15 Can we watch alien TV?
24:53 Are we alone in the Universe?

📺 VIDEO VERSION
https://youtu.be/Oo2JR1zxJ98

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⚖️ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0)

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[Q&A] First Terrestrial Planets, Expanding Universe VS Gravity, Black Hole Lagrange Points