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
Zazzle Space Exploration market place
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