AaS! 253: What Does Outer Space Sound Like?

How hard is interstellar travel? What are the possible ways to achieve the required energy? Is there anything at all feasible in the works? I discuss these questions and more in today's Ask a Spaceman...

2 Heinä 201937min

What's the deal with redshift? How can we actually interpret velocities when it comes to cosmic expansion? And what's with the recent tension over measuring the expansion rate? I discuss these questio...

18 Kesä 201936min

Is light made of waves or particles? Is matter made of waves or particles? What does it mean for matter to "wave", anyway? Why is this so hard to understand? I discuss these questions and more in toda...

4 Kesä 201927min

What's so bad about Venus, besides everything? How did it get so bad? And are we next? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter ...

21 Touko 201924min

What is the "cosmic calendar"? What are some important scales in the universe? Why is it so hard to judge "importance" of events? I discuss these questions and more in today's Ask a Spaceman! Support ...

7 Touko 201924min

What are galaxy clusters made of, besides galaxies? How can we use them to understand dark matter? And how can we make pretend ones on a computer? I discuss these questions and more in today's Ask a S...

16 Huhti 201932min

What is "information" in physics? Why do we think it's preserved, and what happens to information when it falls into a black hole? Why is this a problem? I discuss these questions and more in today's ...

2 Huhti 201926min

How do cosmic voids form? What do they teach us about dark energy? What did the early universe look like? What does all this have to do with cupcakes? I discuss these questions and more in today's Ask...

19 Maalis 201930min