New Video Shows Fire and ‘Rain’ on the Sun

by Nancy Atkinson on February 20, 2013

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This footage was obtained by the AIA instrument on the Solar Dynamics Observatory on July 19, 2012. It provides a stunning display of solar activity and shows how wildly different events on the Sun can be. Some come just with a solar flare, some with an additional ejection of solar material called a coronal mass ejection (CME), and some with complex moving structures in association with changes in magnetic field lines that loop up into the Sun’s atmosphere, the corona.

This eruption produced all three.

Screenshot of a dazzling magnetic display on the Sun, a phenomenon known as coronal rain. Credit: NASA/SDO

Screenshot of a dazzling magnetic display on the Sun, a phenomenon known as coronal rain. Credit: NASA/SDO


A moderately powerful solar flare exploded on the Sun’s lower right hand limb, sending out light and radiation. Next came a CME, which shot off to the right out into space. And then, the Sun treated viewers to one of its dazzling magnetic displays — a phenomenon known as coronal rain.

Over the course of the next day, hot plasma in the corona cooled and condensed along strong magnetic fields in the region. Magnetic fields, themselves, are invisible, but the charged plasma is forced to move along the lines, showing up brightly in the extreme ultraviolet wavelength of 304 Angstroms, which highlights material at a temperature of about 50,000 Kelvin. This plasma acts as a tracer, helping scientists watch the dance of magnetic fields on the Sun, outlining the fields as it slowly falls back to the solar surface.

SDO collected one frame every 12 seconds, and the movie plays at 30 frames per second, so each second in this video corresponds to 6 minutes of real time. The video covers 12:30 a.m. EDT to 10:00 p.m. EDT on July 19, 2012.

About 

Nancy Atkinson is Universe Today's Senior Editor. She also is the host of the NASA Lunar Science Institute podcast and works with Astronomy Cast. Nancy is also a NASA/JPL Solar System Ambassador.

Cheryl Bianchi February 21, 2013 at 12:14 AM

simply stunning

Aqua4U February 21, 2013 at 5:28 AM

Wow! THAT is one zingy video! The plasma erupting as an expanding worm like ‘tubule’ as it ‘dis-entwines’ itself from Sol’s innermost magnetic environment and gravitational influence is a double WHAMMIE WOWIE! Yes… I’ll be dreaming of this tonight!

Peristroika February 21, 2013 at 4:04 PM

And the music and thunder were recorded in situe, by the Solar Dynamics Observatory. Mercury is the conductor!

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