Jan 19, 2026
Astronomy Cast Ep. 779: Milankovitch Cycles
By Fraser Cain & Dr. Pamela Gay
Streamed live on Jan 12, 2026.
Humans live short lives, and from our perspective the seasons are something that come and go with perfect regularity. But astronomers know the terrible truth! And that there are cycles that slowly shift over tens...
Jan 12, 2026
Astronomy Cast Ep. 778: Dyson Swarms
By Fraser Cain & Dr. Pamela Gay
Streamed live on Jan 5, 2026.
Freeman Dyson asked a fascinating question. What would it look like if a civilization was using all the energy coming from their star? And what form would this take? This introduced the concept of a Dyson Sphere, or more...
Jan 5, 2026
Astronomy Cast Ep. 777: The Eddington Limit
By Fraser Cain & Dr. Pamela Gay
Streamed live on Dec 29, 2025.
How big can a star get? This is a calculation made by one of the original pioneers of modern astronomy, Sir Arthur Eddington. And it’s named after him, the Eddington Limit. Now, astronomers are finding examples...