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Celebrating the golden anniversary of black-hole singularities

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 50th anniversary.

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Black holes may reveal what lies within

The “information loss paradox” in black holes — a problem that has plagued physics for nearly 40 years, since Stephen Hawking first proposed that black holes could radiate energy and evaporate over time — may not exist, according to University at Buffalo scientists.