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October 15, 2014

The earth is no longer at the center of the universe. The inner solar system. Illustration: shutterstock

The center of the universe, peace

The Rosetta spacecraft took this selfie on October 7, along with its target - comet 67P Churyumov-Gardimenko from an altitude of about 10 kilometers. Photo: ESA/Rosetta/Philae/CIVA

A selfie of a spaceship and a comet

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T cells attack a traveling cancer cell in the body. Illustration: shutterstock

The cancer off switch / Jed D. Volchuk

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