AaS! 93: Does the Oort Cloud Exist?
Where is the Oort Cloud and what is it made of? Why do we think some comets come from there? If the Oort Cloud exists, how did it form? I discuss these questions and more in today's Ask a Spaceman! Su...
4 Dec 201841min
AaS! 92: I Give Up, What Is Time?
What makes time so hard to understand? Why is it so different from the spatial dimensions? Is time in any way connected to that most difficult of concepts, entropy? I discuss these questions and more ...
20 Nov 201836min
AaS! 91: Could We Blow Up a Star?
How much energy is needed to blow up the sun? How is this connected to the idea of binding energy? Where is all the energy in the universe? I discuss these questions and more in today's Ask a Spaceman...
6 Nov 201830min
AaS! 90: Why Are Brown Dwarf Stars So Weird?
What do brown dwarfs teach us about stars? What do they teach us about planets? What keeps them warm, and how long do they live? And are they really brown? I discuss these questions and more in today'...
16 Okt 201833min
AaS! 89: What Makes All the Light?
What are the many sources of light in the universe? Why is a spectrum so important? What's the difference between synchrotron and Cherenkov radiation? What's the best word ever in physics? I discuss t...
2 Okt 201826min
A Reading from the Book of Paul
Today I'm reading a sample from my new book, Your Place in the Universe! I'm also sharing details about how you can a) buy the book, b) contribute to my Patreon to get an autographed copy, c) get my b...
25 Sep 201823min
AaS! 88: Is the Drake Equation Useful?
What does the Drake Equation teach us about extraterrestrial civilizations? What does it NOT teach us? What complexities does it hide? Is it even science? I discuss these questions and more in today's...
18 Sep 201833min
AaS! 87: How Do Magnets Work?
What's the connection between motion and magnetism? How can something like a black hole have a magnetic field? What's the connection to quantum mechanics? How did Einstein use magnetism to develop spe...
4 Sep 201831min
