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The Week in Pictures: July 27–August 2, 2013

In the past seven days, Cassini revealed the forces controlling Enceladus' jets, Chandra captured a transiting exoplanet in X-rays, astronomers found a new way of measuring the spin in supermassive black holes, and more.
RELATED TOPICS: BLACK HOLES
NASA/ESA/M. Carollo (ETH Zurich)

Hubble’s COSMOS survey solves “quenched” galaxy mystery

Scientists found that a large number of bigger galaxies switch off at later times, joining their smaller quenched siblings and giving the mistaken impression of individual galaxy growth over time. Learn more »
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