Posted on 08/19/2020 6:10:57 PM PDT by MtnClimber
This one is a video, at link.
Explanation: Does the Sun change as it rotates? Yes, and the changes can vary from subtle to dramatic. In the featured time-lapse sequences, our Sun -- as imaged by NASA's Solar Dynamics Observatory -- is shown rotating though an entire month in 2014. In the large image on the left, the solar chromosphere is depicted in ultraviolet light, while the smaller and lighter image to its upper right simultaneously shows the more familiar solar photosphere in visible light. The rest of the inset six Sun images highlight X-ray emission by relatively rare iron atoms located at different heights of the corona, all false-colored to accentuate differences. The Sun takes just under a month to rotate completely -- rotating fastest at the equator. A large and active sunspot region rotates into view soon after the video starts. Subtle effects include changes in surface texture and the shapes of active regions. Dramatic effects include numerous flashes in active regions, and fluttering and erupting prominences visible all around the Sun's edge. Presently, our Sun is passing an unusually low Solar minimum in activity of its 11-year magnetic cycle. As the video ends, the same large and active sunspot region previously mentioned rotates back into view, this time looking different.
(Excerpt) Read more at apod.nasa.gov ...
Pinging the APOD list.
Thanks!
Wow that was interesting thanks for posting
Really kewl vid.
“Presently, our Sun is passing an unusually low Solar minimum in activity of its 11-year magnetic cycle.”
I told them, and I told them, and I TOLD them - over on the Weekly Garden Thread to prepare for this and plant all ‘short-season’ varieties of their favorite veggies and flowers this year.
The end of August in Wisconsin should be hellishly HOT and so humid you can’t hardly breath. These past few seasons, including this one, have been rainy and mild with less sunny days than ‘normal.’
It’s AUGUST and I’m waking up to 50 degree weather? Hello!
Say what you want, and try to control your little world, but I’m pretty sure Mr. Sun rules us ALL down here on Mother Earth! ;)
Pretty cool.
Amazing! Thank you for sharing.
The sun takes 24.47 days to rotate. So a “day” on the sun is 24.47 days.
Go ahead...rub it in.
:)
I have no idea what I just watched.
I'm trying to absorb this statement. Does it mean that the sun doesn't rotate uniformly, with the equator revolving at a higher rate (not just speed) than nearer the poles, or is it just a meaningless statement that applies to every rotating sphere?
Inquiring minds want to know.
The sun is not responsible for warming the earth.
It is man’ use of fossil fuels that is the cause of nicer winter weather and longer growing seasons.... Oh and ignore the other planets filled with methane. They had dinosaurs and swamps too.
Another example of how puny earth is...I shot this image of the transit of Venus on 6/5/2012. Venus is not much smaller than earth. Venus, on the right side was near maximum transit across the Sun. The next transit of Venus will occur December 8/9, 2125.
I'm not complaining.
It is just like any rotating sphere.
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