Atom & Cosmos

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pulsar PSR B1257+12

RARE FIND  The three rocky planets around pulsar PSR B1257+12 (illustrated) were the first confirmed exoplanets. Pulsar-orbiting planets are quite rare, a new survey suggests. 

Y dwarf illustration

JUST CHILLIN’  Some brown dwarfs, such as the “Y dwarf” illustrated here, have temperatures at or below room temperature. Y dwarfs were discovered in 2011. 

Green Bank Telescope

BIG LISTENER  To eavesdrop on the universe, the Green Bank Telescope requires a quiet location with little interference from human-made radio signals.

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