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STRETCH OUT  The universe is expanding at the same rate no matter what direction you look, a new study of supernovas finds.

Neptune, Proteus and Hippocamp

CHIP OFF THE OLD BLOCK  A massive collision that left Neptune’s second largest moon, Proteus (as seen in the background of this illustration) with a huge crater may have spawned its smallest moon, Hippocamp (foreground).

data mining illustration

MACHINE EUREKA  It’s risky to take scientific discoveries made by AI at face value until these computer programs get better at assessing their own uncertainty, says data scientist Genevera Allen.

Moros intrepidus

TINY TYRANNOSAUR  Standing only 1.2 meters at the hip, the newly discovered Moros intrepidus (illustrated) is one of the smallest known tyrannosaurs.

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