In our latest QA, Fraser tackles hiding places from asteroid strikes, merging Earths, and the fastest way we could explore Planet 9. If we ever actually find it.
This week's question show includes the visible versus the visitable Universe, and why don't black holes increase in mass as virtual particles fall into them? Does the Universe have a preferred spin direction?
In this week's question show, our viewers want to know why the ISS doesn't rotate, and if you can detect a black hole without an accretion disc. Also, why are we always shooting our videos in a forest?