Tag: Photo

This Hubble image shows RS Puppis, a type of variable star known as a Cepheid variable. As variable stars go, Cepheids have comparatively long periods — RS Puppis, for example, varies in brightness by almost a factor of five every 40 or so days. RS Puppis is unusual; this variable star is shrouded by thick, dark clouds of dust enabling a phenomenon known as a light echo to be shown with stunning clarity. These Hubble observations show the ethereal object embedded in its dusty environment, set against a dark sky filled with background galaxies. Found at http://buff.ly/1hoUiQ6

2013-12-19

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via Tumblr http://joshuastarlight.tumblr.com/post/70533489508/this-hubble-image-shows-rs-puppis-a-type-of

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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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2013-12-19

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via Tumblr http://joshuastarlight.tumblr.com/post/70514594977

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upperstories: #it’s a christmas miracle

2013-12-19

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via Tumblr http://joshuastarlight.tumblr.com/post/70514561029/upperstories-its-a-christmas-miracle

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bloggymoynihan: Bobby as Fourvel from an upcoming episode of Comedy Bang! Bang! (x)

2013-12-19

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via Tumblr http://joshuastarlight.tumblr.com/post/70514495743/bloggymoynihan-bobby-as-fourvel-from-an

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2013-12-19

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via Tumblr http://joshuastarlight.tumblr.com/post/70514453466

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2013-12-19

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via Tumblr http://joshuastarlight.tumblr.com/post/70514438701

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englishsnow: by * j e a n e e

2013-12-19

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via Tumblr http://joshuastarlight.tumblr.com/post/70514428713/englishsnow-by-j-e-a-n-e-e

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totheworldsend: thoughtsfromcloudnine: teacupinastorm: #THIS WAS THE BEST THING LAST YEAR AND ITS STILL THE BEST THING RIGHT NOW IT’S BACK Hahaha Comet and Cupid… This is brilliant.

2013-12-19

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via Tumblr http://joshuastarlight.tumblr.com/post/70514403807/totheworldsend-thoughtsfromcloudnine

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josefbarnett: My christmas card illustration for this year! yay! christmas

2013-12-19

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via Tumblr http://joshuastarlight.tumblr.com/post/70514299075/josefbarnett-my-christmas-card-illustration-for

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danielbuchnercompositions: Composition 49 | Rietveld’s Chair (c) Daniel Buchner 2013

2013-12-19

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via Tumblr http://joshuastarlight.tumblr.com/post/70514281346/danielbuchnercompositions-composition-49

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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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