Emerging Tech

Cosmic dust bunnies: scientists find unexpected dust ring around Mercury

In this illustration, several dust rings circle the Sun. These rings form when planets’ gravities tug dust grains into orbit around the Sun. Recently, scientists have detected a dust ring at Mercury’s orbit. NASA’s Goddard Space Flight Center/Mary Pat Hrybyk-Keith Dust turns up everywhere — on bookshelves, under the sofa, and now, apparently, in rings […]