photosphere

IRIS Glimpses an Elusive Region of the Sun

by David Dickinson December 12, 2013

An innovative solar observatory is adding a key piece to the puzzle of the enigma that is our Sun. Its two of key questions in heliophysics: why does our Sun have a corona? And why is the temperature of the corona actually higher than the surface of the Sun? David Dickinson on Google+

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A Branching “Tree” of Solar Plasma

by Jason Major November 24, 2012

Hydrogen-alpha photo of the Sun by Alan Friedman An enormous tree-shaped prominence spreads its “branches” tens of thousands of miles above the Sun’s photosphere in this image, a section of a photo acquired in hydrogen alpha (Ha) by Alan Friedman last week from his backyard in Buffalo, NY. Writes Alan on his blog, “gotta love […]

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A Shimmering, Simmering Sunspot

by Jason Major July 12, 2012

This quick animation made by astrophotographer Alan Friedman shows a 30-minute view of sunspot 1520, a large region of magnetic activity on the Sun that’s currently aimed directly at Earth. Although 1520 has been quiet for the past couple of days, it’s loaded with a delta-class magnetic field — just right for launching powerful X-class […]

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The “Deep Blue Sea” of the Sun

by Jason Major June 21, 2012

Looking like an intricate pen-and-ink illustration, the complex and beautiful structures of the Sun’s surface come to life in yet another stunning photo by Alan Freidman, captured from the historic Mount Wilson Observatory near Los Angeles, California. Click below for the full-size image in all its hydrogen alpha glory. Jason Major on Google+

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Parts of the Sun

by Fraser Cain March 11, 2012

From here on Earth, the Sun like a smooth ball of fire, and before the discovery of sunspots by Galileo, astronomers even thought it was a perfect orb with no imperfections. However, we now know that the Sun, like Earth, is actually made up of several layers, each of which serves its own purpose. It’s […]

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