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Astronomy Cast

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May 20, 2024

Astronomy Cast - Ep. 720: Galaxy Series - Elliptical Galaxies

by Fraser Cain & Dr. Pamela Gay

Streamed live on Apr 30, 2024.

Our galaxy series continues with elliptical galaxies. Unlike other types, these are large, smooth with very few distinguishing features. They’re filled with red and dead stars, a clue to...


May 13, 2024

Astronomy Cast Ep. 719: Galaxy Series - Spiral Galaxies

by Fraser Cain & Dr. Pamela Gay

Streamed live on Apr 30, 2024.

Our galaxy series continues, on to spiral galaxies. In fact, you’re living in one right now, but telescopes show us the various shapes and sizes these galaxies come in. Thanks to JWST,...


May 6, 2024

Astronomy Cast Ep. 718: Galaxy Series - Dwarf Galaxies

by Fraser Cain & Dr. Pamela Gay

Streamed live on Apr 30, 2024.

It’s time to begin a new mini-series, where we’ll look at different classes of galaxies. Today, we’ll start with the dwarf galaxies, which flock around larger galaxies like the Milky Way. Are they...


Apr 29, 2024

Astronomy Cast Ep. 717: Understanding the Ages of Distant Cosmic Objects

by Fraser Cain & Dr. Pamela Gay

Streamed live on Apr 22, 2024.

How old is that star? That planet? That nebula? Figuring out the ages of astronomical objects is surprisingly challenging. Fortunately, astronomers have developed a series of techniques...


Apr 22, 2024

Astronomy Cast Ep. 716 - The God**** Particle - Remembering Peter Higgs

by Fraser Cain & Dr. Pamela Gay

Streamed live on Apr 15, 2024.

Last week, we learned about the death of Peter Higgs, a physicist and discoverer of the particle that bears his name. The Large Hadron Collider was built to find and describe the...