AaS! 95: Does Light Experience Time? (And Other Mysteries)
What does 'time' mean for light? What is the real lesson of the twin paradox? How can we all agree on the true age of the universe? Why is it all so technical? I discuss these questions and more in to...
1 Tammi 201927min
AaS! 94: How Did We Figure Out That Stuff Is Made of Atoms?
How and when did we realize that atoms exist? How did we learn to understand their properties? How was Ernest Rutherford hogging all the science for himself? I discuss these questions and more in toda...
18 Joulu 201846min
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 Joulu 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 Marras 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 Marras 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 Loka 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 Loka 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 Syys 201823min
