Watch Comet Leonard s tail wiggle in NASA satellite footage

NASA STEREO-A satellite s SECCHI/HI-2 camera captured this imagery of Comet C/2021 A1 (Leonard) on December 14, 2021. Learn how to spot the comet: https://www.space.com/comet-leonard-closest-to-earth Credit: Space.com | footage courtesy: NASA/NRL/B.Gallagher | edited by Steve Spaleta (http://www.twitter.com/stevespaleta)