This is a list of ring galaxies. A ring galaxy, as the name suggests, is a disc or spiral galaxy with its galactic disc structured or distorted into a ring or torus-like appearance. Hoag's Object, discovered by Art Hoag in 1950, is the prototypical example of a ring galaxy.

The ring contains many massive, relatively young blue stars, which are extremely bright. The central region contains relatively little luminous matter. Some astronomers believe that ring galaxies are formed when a smaller galaxy passes through the center of a larger galaxy. Because most of a galaxy consists of empty space, this "collision ...

1 day ago · The ring galaxy, nicknamed “Bullseye,” is located 567 million light-years away in the constellation Pisces. It is 250,000 light-years wide, about 2½ times the span of the Milky Way. Bullseye surprised scientists with its many star-filled rings, as previously observed collisional ring galaxies feature a maximum of two or three rings.

3 days ago · Ring galaxies – such as the mysterious and famous Hoag's Object – are thought to be the result of a collision in which one galaxy blasts straight through the center of another. The Bullseye Galaxy has confirmed that this process does indeed take place. Not far from the larger galaxy is a smaller one, seen in visible light images using the ...

4 days ago · Previous observations of other galaxies show a maximum of two or three rings. “This was a serendipitous discovery,” said Imad Pasha, the lead researcher and a doctoral student at Yale University in New Haven, Connecticut. ... They used Keck to confirm one more ring. The team suspects a 10th ring also existed, but has faded and is no longer ...

3 days ago · Scientists using the Hubble Space Telescope have spotted a record-smashing galaxy wrapped in 9 rings of stars — along with the dwarf galaxy that violently plunged through its center.

Apr 20, 2022 · Spirals, ellipticals, and irregulars are all more common than ring galaxies. At last, we know how these ultra-rare objects are made.

Sep 15, 2023 · Researchers used an array of telescopes in Western Australia to peer beyond the Milky Way and study hydrogen gas in galaxies across the cosmos. The two potential polar ring galaxies —in which...

Sep 14, 2023 · These strange galaxies are believed to form their rings of stars and gas during mergers in which a larger galaxy swallows a smaller one, with the gravitational influence of one galaxy dragging...

Aug 27, 2010 · Genesis hypotheses include a galaxy collision billions of years ago and the gravitational effect of a central bar that has since vanished. This image, taken by the Hubble Space Telescope in July 2001, reveals unprecedented details of Hoag’s Object and may yield a better understanding.