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5/2/15 Cover

Feature

Constant Changes

If a constant of nature can vary, then so might laws of physics

By
10:31am, October 2, 2001

Sometimes it's the tiniest differences that change everything. This summer, astrophysicists reported tantalizing evidence of just such a discrepancy.

Using one of the world's largest telescopes, a team of Australian, British, and U.S. astrophysicists observed clouds of gas in space backlit by beams of radiation from ancient, superpowerful quasars.

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