Atom & Cosmos

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FOUR’S A CROWD  Pluto’s outer moons, in a Hubble Space Telescope image, are tightly packed in nearly synced orbits, suggesting that they formed in the wake of a collision.

CMS detector tracking energy

READY TO WORK  The CMS detector tracks the amount of energy (length of bars) deposited by different kinds of particles (color of bars) that were produced during a May 20 test of the Large Hadron Collider. Researchers collided protons at a record energy of 13 trillion electron volts. On June 3, the LHC began running continuously at this energy.

Abell 2744

MAPPING A COSMIC LENS  The strong gravity of galaxy cluster Abell 2744 magnifies (color) and elongates (gray lines) light from galaxies that lurk in the very distant universe.

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