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The John Batchelor Show

#Bestof2023: 1/2 #Astronomy: Three Century history of White Dwarfs .Ken Croswell, Sky & Telescope Magazine.

The John Batchelor Show

John Batchelor

Books, News, Society & Culture, Arts

4.52.8K Ratings

🗓️ 7 November 2023

⏱️ 5 minutes

🧾️ Download transcript

Summary

#Bestof2023: 1/2 #Astronomy: Three Century history of White Dwarfs .Ken Croswell, Sky & Telescope Magazine.

https://en.wikipedia.org/wiki/40_Eridan

1872 Jules Verne

Transcript

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0:00.0

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0:26.8

The preceding may contain forward-looking statements,

0:28.8

which may not be realized. This is

0:37.0

this is CBS I in the world. I'm John Batchewler with my colleague Ken Kraswell,

0:39.0

the author of The Alchemy of the Heavens,

0:41.0

searching for meaning in the Milky Way and

0:43.7

Ken is taking us on a tour a trip an adventure from the discovery of

0:48.8

Aradani A B and C, 40 Aradani, a triple star system, and the discernment of a particular kind of star that's

0:57.1

in a 40 Aradani.

1:00.0

What makes a white dwarf, Ken?

1:01.7

How is it different from an orange dwarf and a red dwarf?

1:05.1

Okay, well let me finish my story here.

1:06.9

I had been saying that because this star,

1:09.9

40 aerobane B, is so hot, Every square inch of its surface radiates enormous

1:14.7

amounts of light, much more so than every square inch of the sun surface. And yet,

1:19.0

as we've been noting, this star in total emits very little light into space so how can it be that such a very hot star can emit so little light into space when every square inch of its surface is radiating so profusely and the answer is

1:35.6

40 every day and be surface must have very few square inches. In other words the

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