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This week we cover Type Ia supernovae and a quartet of quasars...
Do Java sparrows click their beaks to their songs?
This week's headlines include Dawn approaching Ceres, possible sea salt on Europa, and a distant young galaxy.
Scientists are tracking whales—with help from the public—to better understand and prevent deadly ship strikes.
Millipedes in California's mountain ranges use bioluminescence to avoid predators, but how did it originate?