prominence

The Sun’s ultra-hot upper atmosphere, called the corona, is a dynamic environment where transient events occur on various scales. These events are related to changes in the magnetic field structures. One spectacular evidence of these magnetic structures are prominences. Solar prominences – also known as filaments when viewed against the solar disk, are relatively cold and dense plasma clouds suspended in equilibrium by magnetic fields in the hot corona. Prominences can remain relatively quiet and stable for hours, days or even a month (quiescent), but as the magnetic fields that support them change, the instability triggers either a slow decay of emission (disparitions brusques) or a more active phenomenon, a prominence eruption.

Credit: SDO, Helioviewer.org

A Double Eclipse of the Sun

Can the Sun be eclipsed twice at the same time?Last Friday was noteworthy because part of the Earth was treated to a rare total eclipse of the Sun. But also on Friday, from a part of the Earth that only saw part of the Sun eclipsed, a second object appeared simultaneously in front of the Sun: the Earth-orbiting International Space Station. Although space station eclipses are very quick – in this case only 0.6 seconds, they are not so rare. Capturing this composite image took a lot of planning and a little luck, as the photographer had to dodge a series of third objects that kept, annoyingly, also lining up in front of the Sun: clouds. The above superposed time-lapse sequence was taken from Fregenal de la Sierra in southern Spain. The dark disk of the Moon dominates the lower right, while the Sun’s textured surface shows several filaments and, over an edge, a prominence.

Image Credit & Copyright: Thierry Legault

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Hypnotic Solar Explosions in 4k
To the naked eye, our sun is an unremarkable ball of heat and light. Under the eye of the Solar Dynamics Observatory, or S.D.O, the Sun’s activity is revealed under various spectrums of light. See incredibly detailed coronal mass ejections, bursts, and solar flares. Let the immense power of the sun immerse and mesmerize you in stunning Ultra High Definition.

via SpaceRip

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#that murderous smile #it must be a Mills thing

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Imagine Me and You | The Rich Man’s Daughter

The Sun on August 9, 1973

This image is of the surge in action in ultraviolet light of ionized helium. Simultaneous observations like this made possible an almost immediate understanding of the new-found cosmic phenomenon. The elbow prominence was accidentally photographed by Astronaut Owen Garriott (Skylab-3) while observing a small flare near the limb of the sun beneath the mighty arch on August 9, 1973.

Music from Big Pink

The sun put on a concert today. I had a public event scheduled at the Buffalo Museum of Science, but brought my camera along just in case. The sky cleared in the afternoon and after sharing the glorious sun with museum visitors I found a few minutes to capture a bit of data of the star of the show. This massive prominence stands more than 50,000 miles high and stretches 150,000 miles across the edge of the solar disk. It was the biggest hurl of hydrogen plasma that I have seen in years… so glad I came away with a souvenir.