Friday 2 October 2015

The golden anniversary of black-hole singularity

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When a star collapses forming a black hole, a space-time singularity is created wherein the laws of Physics no longer work. In 1965 Sir Roger Penrose presented a theorem where he associated that singularity with so-called 'trapped surfaces' that shrink over time. That hypothesis -- one of the results of the general theory of relativity -- is now celebrating its anniversary.
via Science Daily
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Zazzle Space Gifts for young and old

Rock samples from Western US teach how to hunt for life on Mars

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With news coming this week that NASA has confirmed the presence of flowing saltwater on the surface of Mars, the hunt for life on the Red Planet has new momentum. Now, Eocene rock samples from the Green River formation could guide the search for astrobiology.
via Science Daily
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Electron partitioning process in graphene observed

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Researchers have precisely conducted current-fluctuation ("shot noise") measurement in the graphene p-n junction in the quantum Hall regime.
via Science Daily