... Moving Echoes Around SN 1987A . ... Yesterday's image highlighted reflective rings of light emitted by a supernova explosion. Today's pictures, taken over a year apart, highlight how these echoes are seen to move over time. ... Echoes of Supernova 1987A . ... Although this stellar detonation was seen more than a decade ago, light from it continues to bounce off nearby interstellar dust and be reflected to us. ... The Antennae Galaxies . ... Cold Wind From The Boomerang Nebula . ...