Gargantuan chunk of ‘cosmic web’ discovered. It’s 50 million light-years long.

The map of our universe looks astonishingly like a road map of the United States. Big, bustling clusters of galaxies swell like brightly lit cities, while long, sparse highways of gas connect them in a giant molecular web. Beyond this web: dark, empty space. (Nowhere worth stopping for a selfie, anyway.) Astronomers believe this cosmic […]