The Daily Croissant

Eclectic Perambulations in the Noosphere

  • New Supernova Remnant Lights Up

    • 29 Jan 2012
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    • Astronomy Hubble January 29 2012
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    "This Hubble Space Telescope image of SN 1987A shows the brightening ring of supernova debris. The closest supernova explosion seen in almost 400 years is located in the Large Magellanic Cloud. "
    via hubblesite.org

     

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  • Lightning Over Africa with a Milky Way Backround

    • 28 Jan 2012
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    • Astronomy Earth from Space ISS January 28 2012
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    "The best space images are the ones that put our humble place in perspective, whether it's an image from the moon or a particularly stunning nebula. This one accomplishes the task brilliantly, giving a glimpse of the arm of our galaxy hovering over the limb of our little planet. Watch a timelapse video below.

    This video was taken by the crew of Expedition 30 on board the International Space Station, over a 15-minute period Dec. 29. The space station is passing over central Africa, near southeastern Niger, toward the south Indian Ocean and Madagascar.

    The Milky Way appears as a haze in the middle of the screen, with a brief appearance by Comet Lovejoy."

    via steadyeddie.posterous.com

     

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  • Between the Moon and the City...ISS

    • 26 Jan 2012
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    • Astronomy ISS January 26 2012 Moon Transit
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    by Alan Friedman

    "The ISS passing across the face of a daytime Moon. Photographed from his location in upstate New York, Alan captured these images at 10:30 a.m. EST back on September 2, 2007, and slowed down the animation a bit; in real-time the event lasted less than half a second. (Click the image for an even larger version.)

    Atmospheric distortion creates the “wobbly” appearance of the Moon.

    Alan Friedman is a talented photographer, printer (and avid vintage hat collector) living in Buffalo, NY. His images of the Sun in hydrogen alpha light are second-to-none and have been featured on many astronomy websites. When he’s not taking amazing photos of objects in the sky he creates beautiful hand-silkscreened greeting cards at his company Great Arrow Graphics.

    See more of Alan’s astrophotography on his website, Averted Imagination."

    via universetoday.com

     

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  • Herschel far-infrared view of Messier 16 { Eagle Nebula }

    • 23 Jan 2012
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    • Astronomy January 23 2012
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    Eagle Nebula : a star-forming cluster named NGC6611, known as the “Pillars of Creation.” 

    This Herschel image of the Eagle Nebula, colour coded to 70 microns for blue and 160 microns for green using the PACS (Photodetector Array Camera) and 250 microns for red using the SPIRE (Spectral and Photometric Imaging Receiver) shows the self-emission of the intensely cold nebula's gas and dust as never seen before. Each colour shows a different temperature of dust, from around 10 degrees above absolute zero (10K) for the red, up to around 40K for the blue. In the far–infrared, the nebula shows its intricate tendril nature, with vast cavities forming an almost cave-like surrounding to the famous pillars, which take on an ethereal ghostly appearance. The gas and dust provide the material for the star formation that is still under way inside this enigmatic nebula.

    via sci.esa.int

     

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  • The Case of the Missing Supernova Companion

    • 15 Jan 2012
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    • Astronomy January 15 2012
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    Media_httpapodnasagov_chjmb
    "Where's the other star? At the center of this supernova remnant should be the companion star to the star that blew up. Identifying this star is important for understanding just how Type Ia supernova detonate, which in turn could lead to a better understanding of why the brightness of such explosions are so predictable, which in turn is key to calibrating the entire nature of our universe. The trouble is that even a careful inspection of the center of SNR 0509-67.5 has not found any star at all. This indicates that the companion is intrinsically very faint -- much more faint that many types of bright giant stars that had been previous candidates. In fact, the implication is that the companion star might have to be a faint white dwarf, similar to -- but less massive than -- the star that detonated. SNR 0509-67.5 is shown above in both visible light, shining in red as imaged by the Hubble Space Telescope, and X-ray light, shown in false-color green as imaged by the Chandra X-ray Observatory."
    via apod.nasa.gov

     

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  • Grand Spiral Galaxy NGC 1232

    • 13 Jan 2012
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    • Astronomy January 13 2012
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    Media_httpapodnasagov_icmkw
    "Galaxies are fascinating not only for what is visible, but for what is invisible. Grand spiral galaxy NGC 1232, captured in detail by one of the new Very Large Telescopes, is a good example. The visible is dominated by millions of bright stars and dark dust, caught up in a gravitational swirl of spiral arms revolving about the center. Open clusters containing bright blue stars can be seen sprinkled along these spiral arms, while dark lanes of dense interstellar dust can be seen sprinkled between them. Less visible, but detectable, are billions of dim normal stars and vast tracts of interstellar gas, together wielding such high mass that they dominate the dynamics of the inner galaxy. Invisible are even greater amounts of matter in a form we don't yet know - pervasive dark matter needed to explain the motions of the visible in the outer galaxy."
    via apod.nasa.gov

     

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  • Rose-Colored Omega Nebula Captured in Exquisite Detail

    • 12 Jan 2012
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    • Astronomy January 12 2012
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    Media_httpwwwwiredcom_memof
    "Looking more like a painting than an astronomy photograph, the Omega nebula glows with vivid colors in this new image from the European Southern Observatory’s Very Large Telescope. This is one of the sharpest and most detailed images of this object ever taken from a ground-based telescope."
    via wired.com

     

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  • 5 Hours of Lovejoy in 30 Seconds

    • 4 Jan 2012
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    • Astronomy Comets Film Shorts January 04 2012 Night Skies Timelapse
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    Comet Lovejoy (C/2011 W3) Esperance WA (27-12-2012) from Colin Legg on Vimeo.

    Colin Legg from Esperance, Australia has been documenting Comet Lovejoy’s holiday gift to the southern hemisphere, and this is his latest — and possibly last — timelapse, as the comet has started to fade. This one covers almost 5 hours of Legg’s Comet Lovejoy views as seen during the early morning hours of December 27, 2011. “I used a tracking device to track in azimuth only to maximize coverage,” Legg said. “If you look closely at the head in the 2nd half you can see it moving against the stars.”

    via universetoday.com

     

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  • Timelapse : Cerro Paranal Skies

    • 2 Jan 2012
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    • Astronomy Film Shorts January 02 2012 Night Skies Timelapse
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    "This is one of the best timelapse videos of the year, showing ESO’s Very Large Telescope in action and the gorgeous skies above the observatory on Cerro Paranal in the Atacama Desert of northern Chile. The footage was taken on location by Stephane Guisard and Jose Francisco Salgado of ESO." 
    via universetoday.com

     

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  • 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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    Media_httpidailymailc_mokzl
    "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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