暗物质地图揭示前所未见的结构

SCIENTISTS have created the best ever map of dark matter using subtle distortions in the shape of about 250,000 galaxies. It could help us understand some of the biggest mysteries in the cosmos. Dark matter is extraordinarily hard to map because, true to its name, it doesn’t emit any light that we can detect. It only interacts with regular matter through its gravitational pull, so that is what researchers use to figure out where it is. Jacqueline McCleary at Northeastern University in Massachusetts and her colleagues used the James Webb Space Telescope (JWST) to do so, examining an area of sky slightly bigger than the full moon. …