The Daily Croissant

Eclectic Perambulations in the Noosphere

  • Vision of the Sun's Death Throes

    • 1 Jan 2012
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    • Astronomy Astrophysics Death January 01 2012 sun
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    "Astrophotographer Bill Snyder captured the Dumbbell Nebula - a cloud of star debris which offers a vision of the death throes of our own solar system. 
    'All the expanding gas and dust in this image was inside that star,' says Snyder. When sun-like stars die they 'puff' out their outer layers of gas, which form a huge cloud lit up by core of the dead star.
    Our own sun will blossom into a similar nebula when it dies in about five billion years."
    via dailymail.co.uk

     

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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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  • Great Ball of Blue Fire...

    • 3 Nov 2011
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    • 02November11 Astronomy photography sun
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    by Alan Friedman      October 10, 2009

    The solar disk in the wavelengths of hydrogen alpha light, tinted to show the structures of the chromosphere.   

    You can zoom in for a closer look at the prominence at the top of the disk. This image was featured as NASA's Astronomy Picture of the Day on November 4, 2009.  

     

    via avertedimagination.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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  • Comet and CME on the Sun

    • 13 Oct 2011
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    • 12October11 Astronomy CME Comets Explosion sun
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    "Did a sun-diving comet just cause a solar explosion? Probably not. Recently, this comet dove toward the Sun and was followed very quickly by a Coronal Mass Ejection (CMEs) from the other side of the Sun. The first two sequences in the above video shows the spectacular unfolding of events as seen by the Sun-orbiting SOHO satellite, while the same events were also captured by both Sun-orbiting STEREO satellites."
    via apod.nasa.gov

     

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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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