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Jos Wassink

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A demo on a mock-up painting has demonstrated the power of an new X-ray technology. Experts think it can finally reveal a portrait hidden behind Rembrandt’s Old Man in Military Costume (from 1631).

The Nobel Prize for physics was awarded to the three Americans who, in 1998, showed that the expansion of the universe 14 billion years after the Big Bang has not slowed down. Instead, it speeds up. “A bizarre concept,” says professor of astrodynamics, Boudewijn Ambrosius.