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

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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