Skip to comments.Astronomy Picture of the Day -- AR1520: Islands in the Photosphere
Posted on 07/14/2012 6:04:54 AM PDT by SunkenCiv
Explanation: Awash in a sea of plasma and anchored in magnetic fields, sunspots are planet-sized, dark islands in the solar photosphere, the bright surface of the Sun. Dark because they are slightly cooler than the surrounding surface, this group of sunspots is captured in a close-up telescopic snapshot from July 11. The field of view spans nearly 100,000 miles. They lie in the center of active region AR1520, now crossing the Sun's visible face. In fact, an X-class solar flare and coronal mass ejection erupted from AR1520 on July 12, releasing some of the energy stored in the region's twisted magnetic fields. Headed this way, the coronal mass ejection is expected to arrive today and may trigger geomagnetic storms. As a result, some weekend auroral displays could grace planet Earth's skies along with Sunday's predawn conjunction of bright planets and crescent Moon.
(Excerpt) Read more at 220.127.116.11 ...
[Credit & Copyright: Alan Friedman (Averted Imagination)]
Without the courage of the fearless crew, the Minnow would be lost, the Minnow would be lost...
Ahh, space...reminds one of things eternal....like that timeless question, “Ginger, or Mary Ann?”
Plenty of goings on goin’ on there!
My Intertubes connection will probably die.
But, hey, I’ll make hay while the sun shines and post this now.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.