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To: moovova
Some sunspots are so big that they can be seen from Earth with just a sun filter. The sun is nominally about 850,000 miles in diameter, which makes it over 100 times the diameter of the Earth -- a million times Earth's volume. The distance scales involved are mind-bending, and as astronomical phenomenon go, this is just the beginning.

By my rough calculations, I estimate the big spot in the picture to be at least 40,000 kilometers in diameter (25,000 miles), which makes that part alone three times the size of our little blue marble.

5 posted on 05/17/2023 2:13:31 PM PDT by Joe Brower ("Might we not live in a nobler dream than this?" -- John Ruskin)
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To: Joe Brower

I had my telescope out last week, looking at sunspots. There was a nice grouping- the total amount of real estate they inhabit for a time is hard to imagine. I can’t wait for a really clear day to get it out again.


6 posted on 05/17/2023 2:35:47 PM PDT by telescope115 (My feet are on the ground, and my head is in the stars. A Man, and proud of it!)
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To: Joe Brower

Think about this ...
In comparison to our sun, UY Scuti, our Sun’s radius is 1,700 times smaller.

About 5 billion Suns could fit inside UY Scuti.


7 posted on 05/17/2023 2:49:06 PM PDT by justme4now (Our Right's are God given and I don't need permission from politicians or courts to exercise them!)
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