Archive: 12/04/2007

Electrons caught in the act of tunnelling

We have to climb a mountain in order to conquer it. In quantum physics there is a different way: objects can reach the opposite side of a hill simply by tunnelling through it, instead of laboriously climbing over it. An international ...

dateApr 12, 2007 in General Physics
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Chandra sees remarkable eclipse of black hole

A remarkable eclipse of a supermassive black hole and the hot gas disk around it has been observed with NASA's Chandra X-ray Observatory. This eclipse has allowed two key predictions about the effects of supermassive black ...

dateApr 12, 2007 in Astronomy
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Modified gravity v. dark energy

For many years now, scientists have wondered why the universe is expanding faster than it should be. Through conventional knowledge of physics, the universe should be expanding at a slower pace that observations show that ...

dateApr 12, 2007 in General Physics feature
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Cluster sees tsunamis in space

Cluster is providing new insights into the working of a ‘space tsunami’ that plays a role in disrupting the calm and beautiful aurora, or northern lights, creating patterns of auroral dances in the sky.

dateApr 12, 2007 in Earth Sciences
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