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• Far away, long ago, a star exploded. Supernova 1994D, visible as the bright spot on the lower left, occurred in the outskirts of disk galaxy NGC 4526. Supernova 1994D was not of interest for how different it was, but rather for how similar it was to other supernovae. In fact, the light emitted during the weeks after its explosion caused it to be given the familiar designation of a Type Ia supernova. If all Type 1a supernovae have the same intrinsic brightness, then the dimmer a supernova appears, the farther away it must be. By calibrating a precise brightness-distance relation, astronomers are able to estimate not only the expansion rate of the universe (parameterized by the Hubble Constant), but also the geometry of the universe we live in (parameterized by Omega and Lambda). The large number and great distances to supernovae measured in 1998 have been interpreted as indicating that we live in a previously unexpected universe. Found at http://buff.ly/190cihn

  2013-12-19

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  via Tumblr http://joshuastarlight.tumblr.com/post/70528458221/far-away-long-ago-a-star-exploded-supernova

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• Halley VI Research Station in Antarctica. Found at http://buff.ly/1hoU4Iu

  2013-12-19

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  via Tumblr http://joshuastarlight.tumblr.com/post/70523538317/halley-vi-research-station-in-antarctica-found

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• Grand Canyon River Found at http://buff.ly/1hoU4bq

  2013-12-19

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  via Tumblr http://joshuastarlight.tumblr.com/post/70517133437/grand-canyon-river-found-at

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• “Is that flower for me?” Found at http://buff.ly/1hoSO8l

  2013-12-19

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  via Tumblr http://joshuastarlight.tumblr.com/post/70514224235/is-that-flower-for-me-found-at

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• Marble Caves in Southern Patagonia, Chile Found at http://buff.ly/1hoSIO3

  2013-12-19

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  via Tumblr http://joshuastarlight.tumblr.com/post/70514140537/marble-caves-in-southern-patagonia-chile-found

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• The Milky Way over El Castillo Pyramid, Mexico Found at http://buff.ly/1cSsLW8

  2013-12-18

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  via Tumblr http://joshuastarlight.tumblr.com/post/70461031425/the-milky-way-over-el-castillo-pyramid-mexico

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• National Resources Defence Council Found at http://buff.ly/J5ZvzM

  2013-12-18

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  via Tumblr http://joshuastarlight.tumblr.com/post/70416108464/national-resources-defence-council-found-at

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• Starry Arabian Desert by Mohammad Alfaraj Found at http://buff.ly/J5Ydol

  2013-12-18

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  via Tumblr http://joshuastarlight.tumblr.com/post/70415186894/starry-arabian-desert-by-mohammad-alfaraj-found

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• Determination should not turn into arrogance and resolution into obstinacy. Often they do… … Love is the antidote. ~ Swami Chinmayananda Found at http://buff.ly/IVCMXx

  2013-12-18

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  via Tumblr http://joshuastarlight.tumblr.com/post/70408217447/determination-should-not-turn-into-arrogance-and

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• “In the attitude of silence the soul finds the path in a clearer light, and what is elusive and deceptive resolves itself into crystal clearness.” ~ Mahatma Gandhi Found at http://buff.ly/1hjpy2N

  2013-12-18

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  via Tumblr http://joshuastarlight.tumblr.com/post/70368950592/in-the-attitude-of-silence-the-soul-finds-the

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• “Winter is the time for comfort, for good food and warmth, for the touch of a friendly hand and for a talk beside the fire: it is the time for home.” —Edith Sitwell Art Credit: Kawase Hasui, “Farmhouse Under Snowy Trees At Evening,” -Christmas Card, 1946 Found at http://buff.ly/1fDtCdO

  2013-12-18

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  via Tumblr http://joshuastarlight.tumblr.com/post/70366707224/winter-is-the-time-for-comfort-for-good-food-and

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• Aurora http://buff.ly/19wYviU

  2013-12-18

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  via Tumblr http://joshuastarlight.tumblr.com/post/70365474371/aurora-http-buff-ly-19wyviu

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• Thor’s Helmet This helmet-shaped cosmic cloud with wing-like appendages is popularly called Thor’s Helmet. Heroically sized even for a Norse god, Thor’s Helmet is about 30 light-years across. In fact, the helmet is actually more like an interstellar bubble, blown as a fast wind from the bright, massive star near the bubble’s center sweeps through a surrounding molecular cloud. Known as a Wolf-Rayet star, the central star is an extremely hot giant thought to be in a brief, pre-supernova stage of evolution. Cataloged as NGC 2359, the nebula is located about 15,000 light-years away in the constellation Canis Major. The sharp image captures striking details of the nebula’s filamentary structures and also records an almost emerald color from strong emission due to oxygen atoms in the glowing gas. by BILL SNYDER http://buff.ly/1fDrJh8 Found at http://buff.ly/1fDrJh9

  2013-12-18

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  via Tumblr http://joshuastarlight.tumblr.com/post/70365270912/thors-helmet-this-helmet-shaped-cosmic-cloud-with

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• Simply Earth A day’s clouds. The shape and texture of the land. The living ocean. City lights as a beacon of human presence across the globe. This amazingly beautiful view of Earth from space is a fusion of science and art, a showcase for the remote-sensing technology that makes such views possible, and a testament to the passion and creativity of the scientists who devote their careers to understanding how land, ocean, and atmosphere—even life itself—interact to generate Earth’s unique (as far as we know!) life-sustaining environment. Drawing on data from multiple satellite missions (not all collected at the same time), a team of NASA scientists and graphic artists created layers of global data for everything from the land surface, to polar sea ice, to the light reflected by the chlorophyll in the billions of microscopic plants that grow in the ocean. They wrapped these layers around a globe, set it against a black background, and simulated the hazy edge of the Earth’s atmosphere (the limb) that appears in astronaut photography of the Earth. The land surface layer is based on photo-like surface reflectance observations (reflected sunlight) measured by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite in July 2004. The sea ice layer near the poles comes from Terra MODIS observations of daytime sea ice observed between August 28 and September 6, 2001. The ocean layer is a composite. In shallow water areas, the layer shows surface reflectances observed by Terra MODIS in July 2004. In the open ocean, the photo-like layer is overlaid with observations of the average ocean chlorophyll content for 2004. NASA’s Aqua MODIS collected the chlorophyll data. The cloud layer shows a single-day snapshot of clouds observed by Terra MODIS across the planet on July 29, 2001. City lights on Earth’s night side are visualized from data collected by the Defense Meteorological Satellite Program mission between 1994–1995. The topography layer is based on radar data collected by the Space Shuttle Endeavour during an 11-day mission in February of 2000. Topography over Antarctica comes from the Radarsat Antarctic Mapping Project, version 2. Most of the data layers in this visualization are available as monthly composites as part of NASA’s Blue Marble Next Generation image collection. The images in the collection appear in cylindrical projection (rectangular maps), and they are available at 500-meter resolution. The large images provided above are the full-size versions of these globes. In their hope that these images will inspire people to appreciate the beauty of our home planet and to learn about the Earth system, the developers of these images encourage readers to re-use and re-publish the images freely. Credit: NASA/Goddard Space Flight Center/Reto Stöckli Found at http://buff.ly/19wX9EF

  2013-12-18

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  via Tumblr http://joshuastarlight.tumblr.com/post/70364254134/simply-earth-a-days-clouds-the-shape-and-texture

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