Ask a Spaceman!

Why is the strong force better known as the "color force"? What's the best way to think about protons and quarks? What do the Three Musketeers have to do with anything? I discuss these questions and m...

5 Helmi 201925min

Why are matter and antimatter symmetric? What happened in the early universe to make matter win? Do we have any clue as to why? What do puppies have to do with it? I discuss these questions and more i...

15 Tammi 201923min

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

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

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

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

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

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