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A beautiful but skewed\u00a0spiral galaxy\u00a0dazzles in today\u2019s NASA\/ESA Hubble Space Telescope\u00a0Picture of the Week. This galaxy, called Arp 184 or NGC 1961, sits about 190 million light-years away from Earth in the constellation\u00a0Camelopardalis\u00a0(The Giraffe).\u00a0<\/p>\n
The name Arp 184 comes from the\u00a0Atlas of Peculiar Galaxies<\/i>, which was compiled by astronomer Halton Arp in 1966. The 338 galaxies in the atlas are oddly shaped, tending to be neither entirely\u00a0elliptical\u00a0nor entirely spiral-shaped. Many of the galaxies are in the process of interacting with other galaxies, while others are\u00a0dwarf galaxies\u00a0without well-defined structures. Arp 184 earned its spot in the catalogue thanks to its single broad, star-speckled spiral arm that appears to stretch toward us. The galaxy\u2019s far side sports a few wisps of gas and stars but lacks a similarly impressive spiral arm.<\/p>\n
This Hubble image combines data from three Snapshot observing programmes, which are composed of short observations that can be slotted into time gaps between other proposals. One of the three programmes targeted Arp 184 for its peculiar appearance. This programme surveyed galaxies listed in the\u00a0Atlas of Peculiar Galaxies\u00a0<\/i>as well as\u00a0A Catalogue of Southern Peculiar Galaxies and Associations<\/i>, a similar catalogue compiled by Halton Arp and Barry Madore.<\/p>\n
The remaining two programmes were designed to check up on the aftermath of fleeting astronomical events like supernovae and tidal disruption events \u2014 when a star is ripped apart after wandering too close to a supermassive black hole. Since Arp 184 has hosted four known supernovae in the past three decades, it\u2019s a rich target for a\u00a0supernova\u00a0hunt.<\/p>\n
[Image Description:<\/i>\u00a0A spiral galaxy seen at a skewed angle. Its centre is a bright spot radiating light. A thick, stormy disc of material surrounds this, with swirling strands of dark dust and bright spots of star formation strewn through the disc. A large spiral arm extends from the disc towards the viewer. Some foreg<\/p>\n<\/p><\/div>\n<\/p><\/div>\n