Stephan's Quintet
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Stephan's Quintet is a visual grouping of five galaxies of which four form the first compact galaxy group ever discovered. The group, visible in the constellation Pegasus, was discovered by Édouard St
Clockwise from upper left: NGC 7320, NGC 7319, NGC 7318 (a and b), NGC 7317
Stephan's Quintet. The blue arc across the top center is a shock caused by colliding intergalactic gas. Image Credits: X-ray (blue): NASA/CXC/CfA/E. O'Sullivan Optical (brown): Canada-France-Hawaii-Telescope/Coelum
Earthbound monochrome (sdss-g filtered) image of Stephan's Quintet from the Liverpool Telescope
Detail of the quintet in a photo by Hubble Space Telescope, 1998–99. Credits: NASA/ESA
NGC 7318
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NGC 7318 is a pair of colliding galaxies about 280 million light-years from Earth. They appear in the Constellation Pegasus and are members of Stephan's Quintet. They were discovered on 27 September 1
Stephan's Quintet
…selected as one of the five cosmic objects observed by the James Webb Space Telescope as part of the release of its first official science images. As NGC 7318B collides with gas in the group, a huge shock wave bigger than the Milky Way spreads throughout the medium between the galaxies, heating some of the gas…
NGC 7318 imaged by the Hubble Space Telescope. 8-micrometre infrared light = red, H-alpha = green, visible red light = blue. NGC 7318b is the upper galaxy, NGC 7318a is the lower galaxy.