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.
NASA, ESA, M. Showalter/SETI Institute
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.
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.