221: The Great Debate I

The Andromeda Galaxy, M31, NGC 224.

By the beginning of the twentieth century, astronomers had a rough idea of the size and shape of our galaxy. Our solar system was believed to be located at or near the center.

Three decades later, after advances in astronomy, it was determined that our solar system is nowhere near the center of the galaxy. Far more surprising were the discoveries that our galaxy is only one of many such collections of stars, and that the Universe is expanding.

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Playlist:

Fanfare

Opening Theme

Four Pieces for Clarinet and Orchestra, No. 1
Composed in 1913 by Alban Berg. Public domain.
Performed by Carol McGonnell, clarinet; Steven Beck, piano. Used pursuant to a Creative Commons CC BY-NC-ND 3.0 license. Source.

Closing Theme 



Except when otherwise indicated, the contents of this podcast are © and ℗ 2015, 2016, 2017, 2018, 2019, 2020 by Mark Painter, all rights reserved. Some music and sound effects used by arrangement with Pond 5. Car horn sound effect from Wikipedia user Magicallwiz and used pursuant to a Creative Commons CC BY-SA 3.0 license. Source.

3 thoughts on “221: The Great Debate I

  1. This is a small pet peeve of mine, but can you please no put automobile sounds in podcasts? A lot people listen to these on their commute. Even when forewarned, it can be dangerous.

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