[Q&A+] Humanity's Biosignatures, Galaxy Rotation, The Ultimate Question

BONUS QUESTION STARTS AT 15:49 Watch the video here (with no ads) or on YouTube: https://youtu.be/GvVZsDw3Xk0If the robots take over, what would our biosignatures look like? is a galaxy's rotation tied to its black hole? what would happen to the Universe if dark matter disappeared? And in Q&A+, which scifi universe would I like to live in?00:00 Intro 00:25 [@AriasThirdOfHisName] What will be left of us if robots take over? 04:52 [@Frosty.Winnipeg] Is the rotation of a galaxy tied in any way to the rotation of its black hole? 06:09 [@EdSceptic-y2e] What would happen if all the dark matter dissappeared? 11:19 [@christiandesalliers4663] Why does material must shead it's angular momentum before falling into a black hole? 14:58 [@BigC799] What three questions would I ask the Universe? 15:49 [@kimbarron4239] Which fictional universe would I like to live in? 17:40 OutroFull livestream: https://www.youtube.com/live/jtVVWzfyB0w