How big can a a rocky planet get? Can a rocky planet turn into a gas giant? Why are some planets rocky and others gassy? I discuss these questions and more in today’s Ask a Spaceman!
How do giant black holes shut off star formation? How do they turn it back on? Which came first, the black hole or the galaxy? I discuss these questions and more in today’s Ask a Spaceman!
How did gravity get so ridiculously weak? Could it be related to extra dimensions? What does string theory and the concept of the “bulk” have to do with it? I discuss these questions and more in today’s Ask a Spaceman!
What is the dipole repeller? Why is it a dipole? What is it repelling? What is the Bootes Void and how is it connected to dark energy? I discuss these questions and more in today’s Ask a Spaceman!
What does everybody think is the twin paradox? What's the REAL twin paradox? How is the paradox resolved, and what does it teach us about synchronicity? I discuss these questions and more in today’s Ask a Spaceman!