AaS! 265: Does Antimatter Fall Up?

What is the "cold spot" on the cosmic microwave background? Why shouldn't it exist? What are some possible explanations for it, and why are they unsatisfying? I discuss these questions and more in tod...

4 Juni 202440min

How do planets get tidally locked? What are these systems typically like? Can life find a home in such a challenging environment? I discuss these questions and more in today's Ask a Spaceman! Support ...

21 Maj 202436min

If we went to the Moon already, why can't we go back so easily? What technology have we lost? What are we trying to do differently? I discuss these questions and more in today's Ask a Spaceman! Suppor...

7 Maj 202433min

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

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

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

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

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