
AaS! 222: What is the Most Distant Thing We Can See?
What's the most distant thing we can see with the naked eye? What about with a telescope? What about at other wavelengths? Is there anything more to see? I discuss these questions and more in today's ...
16 Apr 202434min

AaS! 221: Will Emergent Gravity Rewrite Physics?
What is "emergence" in physics and why is it a big deal? What would it mean for gravity to be emergent? How would we have to rewrite the laws of physics? I discuss these questions and more in today's ...
2 Apr 202434min

AaS! 220: Will Our Universe End in a Big Rip?
How can a "big rip" tear the universe apart? What does that mean for existence itself? Is it going to happen, and what are we doing to find out? I discuss these questions and more in today's Ask a Spa...
19 Mars 202438min

AaS! 219: What's the Best Way to Defend Our Planet?
How do we track dangerous asteroids? What can impacts do to us? What do we plan to do if The Big One is headed for us? Is Armageddon a documentary? I discuss these questions and more in today's Ask a ...
5 Mars 202440min

AaS! 218: How Do We Know What the Milky Way Looks Like?
Why is it so hard to get a picture of the Milky Way? How much of our galaxy have we mapped? What the heck is a "barred spiral" and what does that have to do with our core? I discuss these questions an...
20 Feb 202437min

AaS! 217: Will We Achieve Fusion Power Soon?
How do we achieve nuclear fusion in the laboratory? What are some experiments that are trying to achieve fusion power generation? Why is it so difficult? I discuss these questions and more in today's ...
6 Feb 202439min

AaS! 216: Do Aliens Look Like Us?
Is evolution universal throughout the cosmos? What are the different forms that life can take? When did life first appear in the universe? I discuss these questions and more in today's Ask a Spaceman!...
16 Jan 202440min





















