solaractivity

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[Screen shot of my page’s Solar Activity gadget. As you can see we’ve been experiencing a M Class Flare since last night.]

CME TARGETS EARTH: New sunspot 1387 erupted during the late hours of Christmas Day, producing an M4-class flare and hurling a CME toward Earth. The CME is expected to deliver a glancing blow to Earth’s magnetic field on Dec. 28th at 1200 UT and a direct hit to the planet Mars on Dec. 30th at 1800 UT. Using onboard radiation sensors, NASA’s Curiosity rover might be able to sense the CME when it passes the rover’s spacecraft en route to Mars. Here on Earth, NOAA forecasters estimate a 30-to-40% chance of geomagnetic storms on Dec. 28th when the CME and an incoming solar wind stream (unrelated to the CME) could arrive in quick succession. High-latitude sky watchers should be alert for auroras on Wednesday night.”

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SDO - M9-Class Flare from AR11402 - 2012-01-23 00:00 to 12:00 - AIA 171Å - HD

“The Atmospheric Imaging Assembly (AIA) aboard the Solar Dynamics Observatory is essentially a series of cameras set up to take images of the Sun every few seconds and through a variety of filters. This video is a 12 hour series of data gathered by the AIA 171Å filter. It shows AR11402 from 2012-01-23 00:00 to 12:00 and includes an M9-class flare at about 04:00. Almost 1200 images were used to make the frames for the video, so what you see here is real time sped up by about 1000 times.


The 171Å filter is designed to show coronal loops, those arcs you see extending off of the Sun where plasma is moving along magnetic field lines. Most of what you see here is activity in the corona and upper transition region.” Video source.

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[Screen shot from solar activity gadget on my page.]

We’ve been experiencing large geomagnetic storms from Saturday night to today, and increasing Solar flares through out the M Class. 

The light show in the sky [aurora borealis] should be spectacular for a bit where it is visible, usually in the more Northern hemisphere. If you’re lucky enough to catch a glimpse, don’t forget to grab your camera! -TSR

Watch on thescienceofreality.tumblr.com

Total Solar Eclipse 2012 Cairns, Queensland, Australia video in detail.

If you haven’t been keeping up with solar activity, now is the time to! This year [2012] we are entering a double peak of solar activity, and a lot of CME’s and solar flares are being directed towards earth and causing quite a bit of geomagnetic storming. [Usually resulting in aurora borealis in Northern Hemisphere areas as well as appearing sometimes a bit more towards the South than is normal.] This heightened solar activity also sometimes influences electrical grids [black outs are possible], satellites, and a possible emittance of slight radiation which would be exposed to astronauts and high altitude fliers alike. 

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SOLAR ACTIVITY UPDATE: C-CLASS Trend Continues/Incoming CME

[Sept. 16, 2011]

SUNDIVING COMET: A comet is diving into the sun today. Discovered just yesterday by amateur comet hunters Michal Kusiak of Poland and Sergei Schmalz of Germany, the icy visitor from the outer solar system is expected to brighten to first magnitude before it disintegrates during the late hours of Sept. 14th. The doomed comet appears to be a member of the Kreutz family. Kreutz sungrazers are fragments from the breakup of a single giant comet many centuries ago. They get their name from 19th century German astronomer Heinrich Kreutz, who studied them in detail. Several Kreutz fragments pass by the sun and disintegrate every day. Most, measuring less than a few meters across, are too small to see, but occasionally a big fragment like this one attracts attention.”

Watch on thescienceofreality.tumblr.com

Solar Flare - AIA 193/304

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AIA 335.

User highlight: back-sided eruption appears to cause a front-sided eruption

Solar Dynamics Observatory

anonymous asked:

millions degrees C? I thought Sun was like 5000~6000 C at the surface

Thank you for bringing up this point. This is true, but these images are focusing on different areas/temperatures of the sun’s atmosphere[s] 


“The surface, or photosphere, of the sun is about 10,000° Fahrenheit (5,500° Celsius). Cool, dark areas of magnetic disturbance that erupt on the photosphere, called sunspots, are only about 6,700° Fahrenheit (4,000° Celsius).

The layer of the sun’s atmosphere that lies just beyond the photosphere, called the chromosphere, is only about 1,900 miles (3,000 kilometers) thick. Where it meets the photosphere, the chromosphere is about 7,800° Fahrenheit (4,300° Celsius). The temperature rises throughout the chromosphere. Where the chromosphere merges with the sun’s outermost atmospheric layer, the corona, it is about 180,000° Fahrenheit (100,000° Celsius). Temperatures rise to 3,600,000° Fahrenheit (2,000,000° Celsius) in the part of the corona that’s farthest from the sun.

The sun is hottest at its center—about 27,000,000° Fahrenheit (15,000,000° Celsius)!”

Sources: Abell, George O. Realm of the Universe, 5th ed., pp. 225-28; Asimov, Isaac. Isaac Asimov’s Guide to Earth and Space, pp. 159-61; Moore, Patrick. Atlas of the Solar System, p. 19.

Source: UXL Science Fact Finder, ©1998 Gale Cengage. All Rights Reserved. Full copyright

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