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IC 443 (also known as the Jellyfish Nebula and Sharpless 248 ) is a galactic supernova remnant (SNR) in the constellation Gemini. On the plane of the sky, it is located near the star Eta Geminorum. Its distance is roughly 5,000 light years from Earth. IC 443 may be the remains of a supernova that occurred 30,000 - 35,000 years ago.
Astronomers from the INAF-Palermo Astronomical Observatory modeled a supernova remnant called IC 443 or the Jellyfish Nebula, showing just how weird they can get.
Messier 30 (also known as M30, NGC 7099, or the Jellyfish Cluster) is a globular cluster of stars in the southeast of the southern constellation of Capricornus, at about the declination of the Sun when the latter is at December solstice.
It was likely formed 30,000 years ago in the supernova that created the supernova remnant IC 443, the "Jellyfish Nebula." [ 2 ] [ 3 ] [ 4 ] It is travelling at approximately 800,000 km/h away from the site.
A jellyfish galaxy is a type of galaxy found in galaxy clusters. They are characterised by ram pressure stripping of gas from the affected galaxy by the intracluster medium , triggering starbursts along a tail of gas.
From this work Sharpless published his catalog of H II regions in two editions: the first in 1953, with 142 nebula; [3] and the second and final edition in 1959, with 312 nebulae. [ 2 ] [ 4 ] Sharpless coordinates are based on the star catalogs Bonner Durchmusterung (BD) and Cordoba Durchmusterung (CD), but the second release was adjusted to ...
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