2/ I mean, seriously. SERIOUSLY.pic.twitter.com/mmMSIkGHlF
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3/ Ever watched your soup boil or cumulunimbus clouds punching their way up into the sky? This is the same thing. Convection cells, hot gas rising… but each one of those cells is 2,000 KM ACROSS. And DKIST can see features as small as 30 km across.
4/ For scale, the entire continental US would fit comfortably inside that image. And you could zoom in and see LA. This is just a tiny piece of the Sun, which is a sphere 1.4 million km across. If you were in an airplane, it would take 7 months to fly around the Sun.
5/ But a lot of the action happens on these tiny scales just a few dozen km wide. That’s why this ‘scope was built, to probe how the surface of the Sun acts magnetically. The Sun is hot (duh) but a big fraction of its power comes from magnetism.
6/ I go into detail in the article, including links to more info, so I won’t belabor it here. I just want to smash your brain with the scale of all this. So here is a video made from images taken over just ten minutes.https://www.youtube.com/watch?v=tZpTJzVtKHw …
7/7 So please, read the article, click the links, and learn more about this ridiculously powerful ball of ionized plasma right down the road from us, and the exquisite machinery we use to observe it. https://www.syfy.com/syfywire/the-sun-up-close-and-very-personal-first-light-for-the-daniel-k-inouye-solar-telescope … /fin
8/7 Arg! Correction! I said convection takes over inside the Sun due to density changes, but that’s secondary to the *opacity* of the plasma changing. I changed the text in the article; if you want tech details (and math) wikipedia has a description: https://en.wikipedia.org/wiki/Radiation_zone …
9/7 (of 9) My thanks to solar physicist Regner Trampedach for pointing this out. I knew this, vaguely, from a class in grad school so I'm glad he mentioned it. Seeing the equations brought a lot of it back. :) https://edit.syfy.com/syfywire/the-sun-up-close-and-very-personal-first-light-for-the-daniel-k-inouye-solar-telescope?cachebust …
Very cool.
Probably not...
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