astronomy   25361

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[1105.3402] Mystery of the Cosmological Constant
The 2011 Nobel prize in physics has been awarded to S. Perlmutter, A. Riess and B. Schmidt for their path breaking discovery that the rate of expansion of the universe is increasing with time. The trio used Type Ia supernovae (SNe Ia) as standard candles to estimate their luminosity-distances. To appreciate some of the far reaching implications of their work, I have provided an elementary exposition of general theory of relativity, accelerated expansion of the universe, luminosity-distance, SNe Ia and the cosmological constant problem.
arxiv  astronomy  reading  teaching  work 
2 hours ago by Knusper2000
A fake and a real view of the solar eclipse… FROM SPACE! | Bad Astronomy | Discover Magazine
That other awesome picture you've seen from the annular eclipse? Also fake. (I CAN'T HELP MYSELF)
astronomy  photography 
18 hours ago by johncoxon
アプリレビュー013 Image Blender | ふえるわかめアプリ
You may have seen an image of the annular eclipse as an engagement ring. @wacamera explains how they created it.
photography  astronomy  space  photoshop 
yesterday by johncoxon

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