Atom & Cosmos

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Mosaic of Vesta

SPACE ROCK  A colossal mountain on the south pole of Vesta, seen in this mosaic of images from the Dawn spacecraft, is one of the locales to explore in Vesta Trek.

effects of radiation on the brain

BRAIN ZAP  After radiation exposure, mouse dendrites (green) in the medial prefrontal cortex were shorter and branched less than those of mice not exposed to radiation, as seen in this digital reconstruction. Exposed dendrites also had fewer docking sites (red) that detect messages from other cells. 

illustration of Messenger over Mercury

The MESSENGER spacecraft, illustrated here with actual images of Mercury’s cratered landscape captured by the probe in an early flyby of the planet in 2008, ended its four-year mission April 30. 

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