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    • Glenn Sermos

      most colorful stars in outer space - Yahoo Image Search Results

    • Tania Diaz Cortes | Space-time continuum in colour | O. Krause, et al., SSC, JPL, Caltech, NASA Why is the image of Cassiopeia changing? Two images of the nearby supernova remnant taken a year apart in infrared light appear to show outward motions at tremendous speeds. This was unexpected since the supernova that created the picturesque nebula was seen 325 years ago. The reason is likely light echoes. Light from the supernova heated up distant ambient dust that is just beginning to show its glow. As time goes by, more distant dust lights up, giving the appearance of outward motion. The above image is a composite of X-ray, optical, and infrared light exposures that have been digitally combined. The infrared light image was taken by the orbiting Spitzer Space Telescope and was used in the discovery of the light echo. The portion of Cassiopeia A shown spans about 15 light years and lies 10,000 light years away toward the constellation of Cassiopeia.

    • DG Fletcher

      Space... the final frontier...

    • Joyce Morse

      Meteorite From Supernova That Formed Solar System: What Do Sand Grains Tell Us? [PHOTO] By Staff Reporter on April 29, 2013 NASA’s Spitzer space telescope image of supernova remnant Cassiopeia A. The cyan dot just off center is all that remains of the star that exploded. (Photo: NASA/JPL-Caltech/ O. Krause (S)

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    These types of arcus clouds are typically associated with thunderstorms. Not to be confused with the similar shelf cloud, these rarities of nature occur when air temperatures invert and cause the warm air to be on top of the cool air. Wind then changes speed and direction and causes a rolling effect of these cylinder-type clouds. Roll clouds need just the right amount of moisture to occur. They look like a giant rolling pin across the sky!

    What causes these auroral displays? Once again, it's all about collision. This incredible light show occurs when the gaseous particles of the earth's atmosphere collide with the charged particles from the sun that enter the earth's atmosphere. Typically seen closer to the poles and during the equinoxes of the year, these fantastic displays appear in many colors, although green and pink are the most common.

    Technically known as a circumhorizontal arc, conditions have to be very precise for these rainbows to occur. They usually occur during the summer months – the sun has to be at an elevation of 58° or greater with high altitude cirrus clouds and sunlight entering the ice crystals of the clouds at just the right angle. These are some big clouds too, my friend! Also known as an ice halo, the circumhorizontal arc is actually neither fire nor a rainbow.

    Catatumbo lightning occurs only over the mouth of the Catatumbo River in Venezuela where it empties into Lake Maracaibo. Warm and cold fronts meet creating the perfect condition for this lightning. Add nearby marshes emitting methane gas which in turn improve the electrical conductivity of the clouds and voila! You've got one badass atmospheric phenomenon

    Cirrocumulus or altocumulus clouds containing super-cooled water that can't freeze without a tiny particle to cling to cause fallstreak holes. Scientists believe that when airplanes fly through these clouds they start the process of ice forming and crystallizing. Air passing around an airplane's propellers or wings makes the air expand and cool rapidly and ice crystals form, then drop below a cloud long after a plane has passed through it.


    Australian night sky

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    NASA tweeted this image of live HD Earth viewing from the space station on May 2, 2014. NASA Now Streaming Live HD Camera Views of Earth from Space (Video)


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    Space by Nasa®

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    As above, so below