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Cygnus A
Videos
Cygnus A is a radio galaxy, one of the strongest radio sources in the sky.
False-color radio image at 5 GHz (VLA data)
False-color radio image at 5 GHz (VLA data)
Optical image of Cygnus A contains a giant bubble (cloud in the center)
Optical image of Cygnus A contains a giant bubble (cloud in the center)
Cygnus A composite image of X-Ray light from Chandra Space Telescope (blue) and radio from NSF's Very Large Array (red). Notice the bright hotspots in
Cygnus A composite image of X-Ray light from Chandra Space Telescope (blue) and radio from NSF's Very Large Array (red). Notice the bright hotspots in the eastern and western lobes lit up in both red and blue.
Cassiopeia A
Videos
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
Cygnus A
…and his colleague James Phillips identified that the source scintillated rapidly, and must therefore be a compact object. In 1951, Cygnus A, along with Cassiopeia A, and Puppis A were the first "radio sources" identified with an optical instrument. Of these, Cygnus A became the first radio galaxy, the other two…
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.