This free-floating rogue planet – untethered to any star – has a magnetic field millions of times more powerful than Earth’s and auroras much more brilliant than our world’s northern lights.
Artist’s concept of rogue planet SIMP J01365663+0933473. The free-floating planet has a magnetic field millions of times more powerful than Earth’s and intense auroras. Image via Caltech/Chuck Carter/NRAO/AUI/NSF.
2018 has been an exceptional year for the Perseids. Wonderful photos are still coming in. Thanks to all who submitted!
Miska Saarikko? caught this daylight meteor Monday morning and wrote: "Got a big one at 04:05 CET. Settings were a bit off in the camera, but still fully visible during sunrise. Taken South of Stockholm, Sweden, from my window." Thanks, Miska!
Decades of work have gone into probing the heart of our Milky Way galaxy. Click in for a video showing stars orbiting the 4-million-solar-mass black hole at our galaxy’s core.
Milky Way in Australia via Erin Cole
61 Cygni isn’t bright. But it moves exceptionally rapidly against the background of more distant stars. Its motion reveals its nearness to Earth.
61 Cygni is a double star, captured here by Scott MacNeill at Frosty Drew Observatory, Charlestown, Rhode Island, June 2015.