AaS! 244: What's the Most Important Wavelength in All Astronomy?
What is 21-cm radiation? What (and who) produces it? What causes it, and what does it tell us about the universe? I discuss these questions and more in today's Ask a Spaceman! Support the show: http:/...
18 Mar 202528min
AaS! 243: So Is the Warp Drive Legit or Not?
What is an Alcubierre warp drive? What would it take to make it work? Could it propel spacecraft even below the speed of light? I discuss these questions and more in today's Ask a Spaceman! Support th...
4 Mar 202531min
AaS! 242: Are There Invisible Stars in the Universe?
What is an axion? How could axions make a star, and what does that have to do with dark matter? What would these stars look like? I discuss these questions and more in today's Ask a Spaceman! Support ...
18 Feb 202535min
AaS! 241: Could We Travel to Parallel Universes?
Where do parallel universes exist? Could we use wormholes to travel to them? What does time travel have to do with all this? I discuss these questions and more in today's Ask a Spaceman! Support the s...
4 Feb 202532min
AaS! 240: Does the Great Filter Explain Why We're Alone?
What is the Fermi Paradox? How rare is non-intelligent vs intelligent life? What are the challenges a species must overcome to colonize the galaxy? Where is everybody? I discuss these questions and mo...
21 Jan 202526min
AaS! 239: What Are the Weirdest Hypothetical Particles?
Are dark photons as sinister as they sound? What did the curvaton do in the early universe? And is everything really made of preons? I discuss these questions and more in today's Ask a Spaceman! Suppo...
7 Jan 202538min
AaS! 237: Could Any Supernova Harm the Earth?
Are we "in range" of any potential supernovae? Has the Earth ever been hit in the past? And what about gamma-ray bursts from across the galaxy, are we safe from those? I discuss these questions and mo...
3 Des 202430min
