Dec 29, 2025
Astronomy Cast Ep. 776: The Matter - Antimatter Dichotomy
By Fraser Cain & Dr. Pamela Gay
Streamed live on Dec 22, 2025.
Shortly after the big bang there were almost exactly the same amounts of matter and antimatter in the Universe, but there was just enough of a difference that we live in a matter-dominated Universe....
Dec 22, 2025
Astronomy Cast Ep. 775: The Hydrogen 21-cm Line
By Fraser Cain & Dr. Pamela Gay
Streamed live on Dec 15, 2025.
Atomic hydrogen is the raw material for stars, but there’s a problem. It’s cold & dark, but it can do a very rare trick, releasing a photon in a very specific wavelength, known as the 21 centimeter line....
Dec 8, 2025
Astronomy Cast Ep. 774: How Does Bad Science Happen?
By Fraser Cain & Dr. Pamela Gay
Streamed live on Nov 8, 2025.
Scientific expertise is under attack on all fronts with concerns coming from politicians and the public. While most of this is unwarranted and politically motivated, there can be germ of truth. Bad science...
Dec 1, 2025
Astronomy Cast Ep. 773: What Would You Do With $1 Billion For Astronomy?
By Fraser Cain & Dr. Pamela Gay
Streamed live on Nov 9, 2025.
We are powerless fans of space exploration. But what if some fool gave us the authority and funding to make our space dreams a reality? Someone asked us what we’d do with a billion...