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Atom & Cosmos

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illustration of Dawn spacecraft approaching Ceres

HOME STRETCH The Dawn spacecraft has arrived at Ceres, shown in an artist’s illustration, to begin a 14-month investigation of the dwarf planet.

Hypervelocity star

ON THE LOOSE  Hypervelocity stars (one illustrated) travel so fast they can escape the galaxy. US 708 is the fastest known of this cohort, possibly ejected by a supernova explosion, astronomers say.

Hubble Space Telescope image of lensed supernova

Gravity from a galaxy (box) in this Hubble Space Telescope image bends light from a more distant supernova, creating four images of the exploding star (arrows).

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