Shrinking Sgr A*, Prime Directive for Mars, Dark Energy Detectors | Q&A 270

Can there be Dark Energy detectors? When will Sgr A* start shrinking? Should the Prime Directive apply to Mars? Can we bring a proper observatory in space? Answering all these questions and more in this week's Q&A show.

Watch the video here (with no ads) or on YouTube: https://youtu.be/KFsIuE4BiaQ

Here's a link to the full, unedited live stream: https://youtube.com/live/PEfIN5DjFIc?feature=share