Ask a Spaceman!

What’s floating around in space between all the stuff? Are there any truly empty places in the universe? What is the “fabric” of spacetime? I discuss these questions and more in today’s Ask a Spacema…

How were ancient people able to predict eclipses so well? How did they make predictions without modern science? What were they able to discover? I discuss these questions and more in today’s Ask a Sp…

What processes create all the elements? Why are some elements more common than others? How does fusion happen inside and outside of a star? I discuss these questions and more in today’s Ask a Spacema…

How long have astronomers been using artificial intelligence? How do computers sift through massive amounts of data? Will AI discover something new about the universe? I discuss these questions and m…

What triggers ice ages and other climate events? How are sunspot cycles and orbital motions related to climate patterns? What does Jupiter have to do with all this? I discuss these questions and more…

What’s so cool about Triton? How did it end up in orbit around Neptune, and what can we learn from it? Could we send a mission there one day? I discuss these questions and more in today’s Ask a Space…

How are white holes different from black holes? What would happen if you were stuck inside of one? Why don’t they appear in the universe? I discuss these questions and more in today’s Ask a Spaceman!

What is the combined motion of everything in the universe? How does all of that influence us? Are we just going around in circles, or is there something more? I discuss these questions and more in to…

What are some wild stories behind names in astronomy and physics? How did we get the jargon words that we did? What are some of the funniest names? I discuss these questions and more in today’s Ask a…

What’s the difference between science and pseudoscience? What is a scientific mindset? How are we able to spot pseudoscience when it’s happening? I discuss these questions and more in today’s Ask a S…

How was massive astronomy done in the 1800’s? Who were the Harvard Computers? How did Annie Jump Cannon figure out how to classify stars? I discuss these questions and more in today’s Ask a Spaceman!

Why didn’t the big bang collapse in a singularity? What would a universe-sized black hole be like? Now that I think about it, do we live inside a giant black hole already? I discuss these questions a…

Could we nudge the orbit of the Earth to avoid the death of the Sun? Could it get kicked out of the solar system altogether? What are rogue exoplanets? I discuss these questions and more in today’s A…

If light always travels at the speed of light, how does it slow down when passing through air or water? Does it matter if light is made of particles or waves? What’s the difference between phase velo…

What are the biggest mysteries facing modern astronomers? What questions do I wish could be answered in my lifetime? What are most astronomers working on right now? I discuss these questions and more…

What discoveries and insights made the biggest impacts in astronomy and physics? What were the biggest surprises? What results took the longest to achieve? I discuss these questions and more in today…

How does a black hole make a shadow? What can we learn from it? What are we seeing when we look at a black hole? I discuss these questions and more in today’s Ask a Spaceman!

Support the show: http:/…

What are the advantages of robotic exploration of the solar system? What are the limitations? Is there any situation where human exploration is better? I discuss these questions and more in today’s A…

What are Dyson spheres? What would be involved in building one? How much energy would it cost, and could we ever pay it back? I discuss these questions and more in today’s Ask a Spaceman!

Support the…

What’s the temperature of deep space? Can it get any colder than that? How do we even define temperature when there’s nothing around? I discuss these questions and more in today’s Ask a Spaceman!

Sup…