The Daily Croissant

Eclectic Perambulations in the Noosphere

  • Plasma Indirection - Tornadoes on the Sun

    • 27 Feb 2012
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    • February 27 2012 Solar Dynamics Observatory Solar Flares
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    "This video from NASA’s Solar Dynamics Observatory shows plasma spinning around on the surface of the sun, looking a lot like what we’d call tornadoes. Except these whirls are as large as our entire planet and move with gusts up to 300,000 miles per hour! The action was recorded on February 7-8." Tornadoes on the Sun 

    "As if it could not make up its mind . . . darker, cooler plasma slid and shifted back and forth above the Sun's surface seen here for 30 hours (Feb. 7-8, 2012) in extreme ultraviolet light. An active region rotating into view provides a bright backdrop to the gyrating streams of plasma. The particles are being pulled this way and that by competing magnetic forces. They are tracking along strands of magnetic field lines."

    via youtube.com

     

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  • Comet Lovejoy's Close Encounter with Sun

    • 25 Dec 2011
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    • 24December11 Comets Solar Dynamics Observatory sun
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    "The first part of the video from SDO, (taken in 171 Angstrom wavelength, which is typically shown in yellow) was filmed on Dec 15, 2011 showing Comet Lovejoy moving in toward the Sun, with its tail “wiggling” from its interaction with the solar wind. The second part of the clip shows the comet exiting from behind the right side of the Sun, after an hour of travel through its closest approach."  Nancy Atkinson 
    via youtube.com

     

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  • Portraits of Our Sun on 11/11/11 at 11:11 UTC

    • 18 Nov 2011
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    • 11/11/11 17November11 Solar Dynamics Observatory sun
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    The Solar Dynamics Observatory takes images of the Sun about every 10 seconds, so it easily was able to capture the Sun when the clocks and calendars lined up for a mathematically synchronous readout. Below is another image at the same time in different wavelength.

    You can check out what the Sun looks like at anytime of the day or year the the SDO website.  

    via universetoday.com

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  • SDO Spots New Behemoth Sunspot

    • 8 Nov 2011
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    • 07November11 Solar Dynamics Observatory Sunspots sun
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    "NASA’s Solar Dynamics Observatory has spotted one of the largest new sunspots to appear on the surface of the sun in years. It is nearly 25,000 miles wide, or more than three times larger than the Earth. The enormous sunspot was seen rotating over the sun’s northeastern limb on Nov. 3."
    via wired.com

     

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  • Stunning Loops and Filaments on the Sun

    • 24 Oct 2011
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    • 23October11 Solar Dynamics Observatory Solar Flares sun
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    "This video created with data from the Solar Dynamics Observatory is just absolutely and astoundingly beautiful, showing magnetic loops on the Sun earlier today (October 22, 2011). Via @TheSunToday Twitter feed, just watch how the magnetic loops jump, shimmer and coil back into the Sun, following a long duration M1 flare at about 1100 UTC."  
    via universetoday.com

     

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  • Many Colored Auroras Stimulated by August 3rd Sunstorm

    • 8 Sep 2011
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    • 07September11 Auroras Solar Dynamics Observatory Solar Flares Sunstorm
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    Poland Goes Purple Photograph by Kamila Mazurkiewicz

     
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      Dancing Sky Photograph by Olivier du Tré

    "Two August 3 solar flares were each accompanied by giant clouds of charged gas—or coronal mass ejections—aimed at Earth, triggering the sky show. About 48 hours after NASA's Solar Dynamics Observatory had detected the first eruption, the "solar wind" slammed into Earth's magnetic field, creating a geomagnetic storm that lasted four hours."     

    via news.nationalgeographic.com

     

     

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  • How Big Are Solar Flares?

    • 22 Aug 2011
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    • 21August11 Solar Dynamics Observatory Solar Flares Youtube sun
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    "With the recent activity on the Sun, we’ve used the words “massive” or “huge” to describe solar flares. But just how big are they, really? This great video by Scott Stevenson explains and illustrates the actual size of solar flares."  
    via universetoday.com

     

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  • Powerful X-7 Class Solar Flare Briefly Knocks Out HF Radio

    • 19 Aug 2011
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    • 18August11 Astronomy Solar Dynamics Observatory Solar Flares sun
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    The Aug 9, 2011 eruption on the Sun that produced a X-7 class flare caused a temporary blackout of high frequency radio transmissions on the side of Earth covered in daylight. Navigation signals can be degraded in these instances.
    via space.com


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  • Pictures of the Sun

    • 19 Jul 2011
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    • 18July11 Astronomy NASA Solar Dynamics Observatory sun
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    via bbc.co.uk

     

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  • Lop Nur, Xinjiang, China : Potash Ponds

    • 25 Jun 2011
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    • 24June11 Advanced Land Imager China Earth from Space Fertilizer Mining Ponds Solar Dynamics Observatory desert
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    NASA Earth Observatory image created by Jesse Allen and Robert Simmon.   Caption by Michon Scott.

    Located in China’s resource-rich but moisture-poor Xinjiang autonomous region, Lop Nur is an uninviting location for any kind of agriculture. It sits at the eastern end of the Taklimakan Desert, where marching sand dunes can reach heights of 200 meters (650 feet), and dust storms rage across the landscape.

    Yet for all it lacks in agricultural appeal, Lop Nur offers something valuable to farmers the world over: potash. This potassium salt provides a major nutrient required for plant growth, making it a key ingredient in fertilizer.

    via earthobservatory.nasa.gov

     

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