[Q&A+] The Next Interstellar Project, Black Hole Planets, Combining Stars into a Megastar | Q&A 358

What would be the next interstellar project after the quite end of Breakthrough Starshot? Can planets exist around black holes? Why don't all stars combine into one megastar? And in Q&A+, are ion engines the future of space travel? Watch the video here (with no ads) or on YouTube: https://youtu.be/TEcSkFQ14hQ Here's a link to the full, unedited livestream: https://youtube.com/live/gtvRDBOqVK4