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Matter & Energy

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illustration of 2-D honeycomb

ULTRATHIN FILMS  Computer simulations reveal the properties of a little-studied group of synthetic materials: 2-D arrays of metal atoms arranged in honeycombs (illustrated), triangles or squares.

dead stars illustration

TRIPLE THREAT  A threesome of dead stars has allowed a new test of a tenet of Einstein’s theory of gravity. The trio includes a pulsar (illustrated, with bands of electromagnetic radiation in blue) in orbit with a nearby white dwarf. A second white dwarf orbits farther afield (red, upper right).

synthetic cartilage

COUNTERFEIT CARTILAGE  Newly fabricated artificial cartilage made mostly from water is strong and resistant to tears. 

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