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Cassiopeia A
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Cassiopeia A is a supernova remnant in the constellation Cassiopeia and the brightest extrasolar radio source in the sky at frequencies below 1 GHz. The supernova occurred approximately 11,000 light-y
Composite image of Cassiopeia A imaged by Chandra X-ray Observatory
Composite image of Cassiopeia A imaged by Chandra X-ray Observatory
A false color image composed of data from three sources: Red is infrared data from the Spitzer Space Telescope, gold is visible data from the Hubble S
A false color image composed of data from three sources: Red is infrared data from the Spitzer Space Telescope, gold is visible data from the Hubble Space Telescope, and blue and green are data from the Chandra X-ray Observatory. The small, bright, baby-blue dot just off-center is the remnant of the star's core.
Cassiopeia A infrared echo as seen by unWISE. The observation time in this image ranges from 2015 (red) to 2020 (blue). The infrared echo appears as r
Cassiopeia A infrared echo as seen by unWISE. The observation time in this image ranges from 2015 (red) to 2020 (blue). The infrared echo appears as rainbow colored clouds. North is up.
The infrared echo caused by the Cassiopeia A supernova seen by Spitzer. The image was processed in a way that the infrared echo appears colored while
The infrared echo caused by the Cassiopeia A supernova seen by Spitzer. The image was processed in a way that the infrared echo appears colored while dust clouds remain grey. North is on the left.
Cassiopeia (constellation)
Videos
Cassiopeia is a constellation and asterism in the northern sky named after the vain queen Cassiopeia, mother of Andromeda, in Greek mythology, who boasted about her unrivaled beauty. Cassiopeia was on
Cassiopeia A
…Cassiopeia A (Cas A; ) is a supernova remnant (SNR) in the constellation Cassiopeia and the brightest extrasolar radio source in the sky at frequencies below 1 GHz. The supernova occurred approximately 11,000 light-years (3.4 kpc) away…
Cassiopeia in her chair, as depicted in Urania's Mirror
Cassiopeia in her chair, as depicted in Urania's Mirror
Cassiopeia in the night sky
Cassiopeia in the night sky
The constellation Cassiopeia as it can be seen by the naked eye from a northern location
The constellation Cassiopeia as it can be seen by the naked eye from a northern location
Kappa Cassiopeiae and its bow shock. Spitzer infrared image (NASA/JPL-Caltech)
Kappa Cassiopeiae and its bow shock. Spitzer infrared image (NASA/JPL-Caltech)