Cassiopeia A: A Hubble Image Tour

About this video
Duration: 3 minutes, 39 seconds

Cassiopeia A is a supernova remnant: the tattered remains of a massive star that exploded. Astronomers estimate that light from the supernova would have reached Earth after the invention of the telescope, yet – mysteriously – history makes no mention of it.

Explore the science along with the scenery – Image Tours show Hubble pictures through an astronomer's eyes, pinpointing and explaining key features to add understanding to the joy of cosmic sightseeing.

Features, HD Video, Nebulas, Stars, Supernovae, Supernova Remnants, tours


Image: NASA and The Hubble Heritage Team (STScI/AURA)

Publication: July 17, 2007

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