[Q&A+] When Did Dark Matter Appear, Excitement About TRAPPIST-1, Contributing to Astronomy

Which space object would I want to see with my own eyes? Can you meaningfully contribute to science without an Astronomy degree? Has dark matter always been around? And in Q&A+, my weird relationship with Venus as a planet.

BONUS QUESTION STARTS AT 17:39

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Here's a link to the full, unedited livestream: https://youtube.com/live/SiGmJkeCPl8?feature=share