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 collision illustration

BACK TO WORK  The CMS detector tracks the trajectories of particles (yellow and red lines) created in proton collisions at the Large Hadron Collider on June 3 — the first day of data collection after more than two years of upgrades. The green and blue bars represent the amount of energy deposited by different types of particles.

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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