Atom & Cosmos

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illustration of Rosetta and Philae approaching comet 67/P

GOODBYE, PHILAE The European Space Agency’s Rosetta spacecraft (illustrated, upper left) will no longer listen for signals from the Philae lander, which has been silent since July 2015. 

Jupiter's Great Red Spot

FULL OF HOT AIR  Churning air over the Great Red Spot on Jupiter (illustrated) creates a hot spot (yellow) hundreds of degrees of warmer than the surrounding atmosphere.

spiral galaxy UGC 9391

UNRULY UNIVERSE  Different methods for measuring the universe’s expansion rate disagree. To make one such measurement, scientists observed Cepheid variable stars and a type 1a supernova in the spiral galaxy UGC 9391 (shown), located 130 million light-years away in the constellation Draco.

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