What makes the principle of least action so important? Who came up with it? Is it all just a bunch of math or does it actually mean something? I discuss these questions and more in today’s Ask a Spaceman!
What is a pulsar? How can we use them to map gravitational waves? What kind of technology does it take? I discuss these questions and more in today’s Ask a Spaceman!
What are some of the problems with dark matter? What about modified gravity? Are there any other solutions? I discuss these questions and more in today’s Ask a Spaceman!
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!