A ring galaxy is a galaxy with a circle-like appearance. Hoag's Object, discovered by Arthur Hoag in 1950, is an example of a ring galaxy. [1] 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 ...

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.

Sep 15, 2023 · The two potential polar ring galaxies—in which a ring of hydrogen gas orbits the main spiral disk at a 90-degree angle—are highly unusual objects.

Hoag's Object is an unusual ring galaxy in the constellation of Serpens Caput. [5] It is named after Arthur Hoag, who discovered it in 1950 and identified it as either a planetary nebula or a peculiar galaxy. [6] The galaxy has a D 25 isophotal diameter of …

Apr 20, 2022 · This unusual ring galaxy appears to be lacking a central nucleus, despite having a bright ring rich in not only new stars, but also bright pink star-forming regions.

Aug 27, 2010 · Is this one galaxy or two? Astronomer Art Hoag first asked this question when he chanced upon this unusual extragalactic object. On the outside is a ring dominated by bright blue stars, while near the center lies a ball of much redder stars that are likely much older.

Feb 8, 2025 · This image of collisional ring galaxy LEDA 1313424, nicknamed the Bullseye, was captured by the Hubble Space Telescope’s Advanced Camera for Surveys (ACS). The image shows a scale bar, compass arrows, and color key for reference.

Dec 6, 2013 · Unfortunately, NGC 660’s polar ring cannot be seen in this image, but the image has plenty of other features that make it of interest to astronomers – its central bulge is strangely off-kilter and, perhaps more intriguingly, it is thought to harbor exceptionally large amounts of …

Sep 23, 2021 · "Molten Ring" Galaxy Hubble Space Telescope's glamour shots of the universe are so revealing they nearly always have a discovery behind them. In this particular snapshot, a science discovery followed the release of a Hubble observation of a striking example of a deep-space optical phenomenon dubbed...

Feb 17, 2025 · That’s what makes the discovery of the new Bullseye galaxy, LEDA 1313424, so fascinating: it’s a spiral galaxy in the process of transforming into a ring. Here’s what we know so far. Ethan ...