Image:Casa.jpg

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Cassiopeia A is the remnant of a once massive star that died in a violent supernova explosion 325 years ago. Spitzer observed it in 2003 and 2004. Credit: NASA/JPL-Caltech/O. Krause (Steward Observatory) [1]

[edit] Licensing

This file is in the public domain because it was created by NASA and the European Space Agency. Hubble material is copyright-free and may be freely used as in the public domain without fee, on the condition that NASA and ESA is credited as the source of the material. The material was created for NASA by STScI under Contract NAS5-26555 and for ESA by the Hubble European Space Agency Information Centre. [2] or [3].

[edit] External Links

Cassiopeia A at ESA/Hubble

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(del) (cur) 10:36, 29 August 2005 . . Nnxion (Talk | contribs) . . 900×720 (159,542 bytes) (Cassiopeia A, taken by the Spitzer_Space_Telescope http://www.spitzer.caltech.edu/Media/happenings/20050825/casa.jpg {{PD-USGov-NASA}})
(del) (rev) 10:25, 29 August 2005 . . Nnxion (Talk | contribs) . . 900×720 (159,542 bytes) (Cassiopeia A is the remnant of a once massive star that died in a violent supernova explosion 325 years ago. Spitzer observed it in 2003 and 2004. Credit: NASA/JPL-Caltech/O. Krause (Steward Observatory) http://www.spitzer.caltech.edu/Media/happenings/200)