[Q&A] Getting Stuck on a Planet, Dangerous Supernovae, Expansionistic Aliens
How big does a planet has to be to make it impossible to fly a rocket from it? Why are aliens always portrayed expansionistic? Can a supernova make us all go extinct? And in our extended Q&A+ edition, is terraforming Mars necessary for finding life there? Answering all these questions and more in this Q&A show. 🎁…
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