The James Webb Space Telescope has imaged a "Cosmic Christmas Bauble" that is actually the aftermath of a supernova. The stunning picture of Cassiopeia A was revealed by Jill Biden as part of the first-ever White House Advent Calendar.

James Webb Space Telescope's 'Cosmic Christmas Bauble' earns spot in White House Advent Calendar (photo, video)

Source: space
Source Link: https://www.space.com/james-webb-space-telescope-jill-biden-cassiopeia-a