Showing posts with label sunspot. Show all posts
Showing posts with label sunspot. Show all posts
Sunday, 10 September 2017
NASAs SDO Watches a Sunspot Turn Toward Earth
NASAs SDO Watches a Sunspot Turn Toward Earth

An active region on the Sun � an area of intense and complex magnetic fields � has rotated into view on the Sun and seems to be growing rather quickly in this video captured by NASA�s Solar Dynamics Observatory between July 5-11, 2017. Such sunspots are a common occurrence on the Sun, but are less frequent as we head toward solar minimum, which is the period of low solar activity during its regular approximately 11-year cycle. This sunspot is the first to appear after the Sun was spotless for two days, and it is the only sunspot group at this moment. Like freckles on the face of the Sun, they appear to be small features, but size is relative: The dark core of this sunspot is actually larger than Earth.
Image Credit: NASA�s Goddard Space Flight Center/SDO/Joy Ng, producer
Explanation from: https://www.nasa.gov/feature/goddard/2017/nasas-sdo-watches-a-sunspot-turn-toward-earth
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Saturday, 12 August 2017
New Lone Sunspot Group
New Lone Sunspot Group

A prominence at the edge of the Sun provided us with a splendid view of solar plasma as it churned and streamed over less than one day (June 25-26, 2017). The charged particles of plasma were being manipulated by strong magnetic forces. When viewed in this wavelength of extreme ultraviolet light, we can trace the movements of the particles. Such occurrences are fairly common but much easier to see when they are near the Suns edge. For a sense of scale, the arch of prominence in the still image has risen up several times the size of Earth.
Image Credit: NASA/GSFC/Solar Dynamics Observatory
Explanation from: https://photojournal.jpl.nasa.gov/catalog/PIA21783
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