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Back Expansion of Supernova Remnant Cassiopeia A

Expansion of Supernova Remnant Cassiopeia A

Date: 30 August 2006
Copyright: ESA/Hubble, NASA and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration

This video shows Hubble observations of the young supernova remnant Cassiopeia A, obtained with the ACS instrument. After zooming in, the view pans over the remnant and blinks between two observations made 9 months apart. The difference between the two reveals the expansion of the ejected material in the supernova remnant.
Last Update: 1 September 2019
23-Jan-2026 10:23 UT

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