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The John Batchelor Show

#Bestof2021: 1/2: The local arm of the Milky Way and our Sun's place in it for now. Ken Croswell, The Lives of Stars. (Originally posted October 4, 2021)

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John Batchelor

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4.62.7K Ratings

🗓️ 1 September 2023

⏱️ 13 minutes

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Summary

#Bestof2021: 1/2: The local arm of the Milky Way and our Sun's place in it for now. Ken Croswell, The Lives of Stars. (Originally posted October 4, 2021)

https://www.pnas.org/content/118/40/e2116185118

"We live in a giant barred spiral galaxy. The Milky Way’s fast-spinning disk of stars and gas whips up spiral arms that spawn new suns, while a bar of mostly older stars cuts through its heart. From afar, our galaxy likely resembles a glowing cosmic hurricane:." Ken Croswell

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Transcript

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0:00.0

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0:33.6

This is CBSI on the world with John Bachelorette, here's John Bachelorette.

0:42.5

This is CBSI on the world, I'm John Bachelorette, I welcome Dr. Ken Croswell, author of the Alchemy

0:48.6

of the Heavens searching for meaning in the Milky Way, to take us to the Milky Way,

0:54.4

a galactic enterprise, Ken has long admired as beautiful, and he now writes in the proceedings

1:01.6

of the National Academy of Sciences, a revelation about the Milky Way, about our place in it,

1:08.9

our solar system, Ken, a very good evening to you, and the Milky Way is a spiral galaxy,

1:14.4

but to do some history, the revelations of spiral galaxy you date to the mid-19th century,

1:20.8

the whirlpool galaxy, and that was sometime before we could perceive our own galaxy because

1:27.5

we're inside that spill of stars across the sky.

1:31.8

What did the whirlpool galaxy teach us?

1:34.3

What does it mean to be a spiral galaxy?

1:36.7

Good evening to you.

1:38.7

Good evening, John.

1:39.7

The whirlpool galaxy is a stunning spiral galaxy, it's still one of the most beautiful galaxies

1:45.3

we know, and there's a picture of a great picture from Hubble that appears in my article

...

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