Stunning Comet Spiral Offers Glimpse of Icy Snowball at Its Core

Stunning Comet Spiral Offers Glimpse of Icy Snowball at Its Core Comet 12P/Pons-Brooks is hiding a strange spiral in its icy heart—and it may tell scientists about the comet’s innards By Meghan Bartels An image of Comet 12P/Pons-Brooks and its…








