DUOS’ DANCE Mergers of two pairs of black holes (illustrated) showcase ability of gravitational waves as a new tool for understanding the universe. LIGO detected gravitational waves from both mergers shown, but at different times and in different parts of the sky.
STAR SPIN Rapidly twirling stars such as Altair (shown; interferometer image, left) have an equatorial bulge that makes them emit more light from their poles than their equator, which could create strange seasons on any orbiting planets.
From left: Zina Deretsky/National Science Foundation; Steve Golden/Caltech/JPL/NASA
JAUNTS TO JUPITER For over four decades, the paths of eight spacecraft have swooped past and looped around the planet Jupiter. This summer NASA’s Juno mission will add a ninth trajectory. The plot shows the view looking down on Jupiter's north pole.