2MASXJ11374755+0448370: https://sga.legacysurvey.org/group/2MASXJ11374755+0448370

Hubble Space Telescope image of Arp 16, also known as M66.

M66 is about 37 million light-years (11.3 Mpc) away.
It was discovered by Charles Messier on 1 March 1780, object 66 in his catalog of “fuzzy things in the night sky that are not comets." He described it as "very long and very faint."

Credit: NASA, ESA, STScI
Source: https://webbtelescope.org/contents/media/images/2024/105/01HMA6P3V363GW0EA0347CR6HV

PGC1499151: https://sga.legacysurvey.org/group/PGC1499151

Image of Arp 274, also known as NGC 5679, from the Atlas of Peculiar Galaxies by Halton Arp (1966).

In the original catalog, it was in the category: Double and multiple galaxies - Connected arms. NGC 5679 is a system of three interacting galaxies, the two large, overlapping spiral galaxies at center, and a smaller companion galaxy at the top.

Source: https://ned.ipac.caltech.edu/level5/Arp/Arp69.html

APOD from 2025-04-17

Virgo Cluster Galaxies

This telescopic view captures the Virgo Cluster, 50 million light-years away, featuring bright elliptical galaxies M87, M86, and M84. M87 dominates with its supermassive black hole, first imaged by #Earth's Event Horizon #Telescope. Markarian's Chain is visible, including the interacting galaxies NGC 4438 and NGC 4435.

HD image at https://apod.nasa.gov/apod/ap250417.html#space #astronomy #galaxy #planet

PGC1388589: https://sga.legacysurvey.org/group/PGC1388589

APOD from 2012-01-26

NGC 4449: Star Stream for a Dwarf #Galaxy

NGC 4449, a dwarf galaxy 12.5 million light-years away in Canes Venatici, is actively forming stars. Comparable to the Large Magellanic Cloud, it has blue star clusters and dust clouds. It features a tidal star stream from a merging satellite galaxy, hinting at dark matter's role in galactic mergers and evolution.

HD image at https://apod.nasa.gov/apod/ap120126.html

PGC928254: https://sga.legacysurvey.org/group/PGC928254

Legacy Surveys image of Arp 11, also known as UGC 717.

UGC 717 is the large spiral galaxy in the lower right. The large spiral in the upper left is UGC 719.

Credit: Legacy Surveys, D. Lang, NERSC, Meli thev, Wikimedia Commons
Source: https://commons.wikimedia.org/wiki/File:Arp_11_legacy_dr10.jpg

Discovery of an ultra-massive grand-design spiral galaxy at z ∼ 5.2: https://www.aanda.org/component/article?access=doi&doi=10.1051/0004-6361/202453487 -> Astronomer Discovers Oldest Known Spiral #Galaxy in the Universe: https://noirlab.edu/public/news/noirlab2516/ - the discovery tells astronomers that galaxies resembling the Milky Way can develop much earlier in the Universe than was previously thought possible.

PGC625197: https://sga.legacysurvey.org/group/PGC625197

When the stars become so thick, they are as stratus in the night, only so, so much more beautiful. My own artwork, "Clouds of stars".

Image of Arp 200, also known as NGC 1134, from the Atlas of Peculiar Galaxies by Halton Arp (1966).

In the original catalog, it was in the category: Amorphous galaxies - Material ejected from nuclei. NGC 1134 is likely interacting with its small companion, seen to the upper left, producing streamers of stars.

Source: https://ned.ipac.caltech.edu/level5/Arp/Arp50.html

2MASXJ10252313+2718354: https://sga.legacysurvey.org/group/2MASXJ10252313+2718354

GALEX image of Arp 286, also known as NGC 5560, NGC 5566, and NGC 5569.

This ultraviolet image shows the youngest, hottest stars in the interacting galaxy triplett. NGC 5566 is the large spiral in the center. The small blue spiral galaxy to the bottom left is NGC 5569. The spiral galaxy to the top left is NGC 5560. Its distorted shape is likely due to interactions with NGC 5569.

Credit: NASA, JPL-Caltech
Source: http://www.galex.caltech.edu/media/glx2006-03r_img04.html

PGC702154: https://sga.legacysurvey.org/group/PGC702154

PGC1549393: https://sga.legacysurvey.org/group/PGC1549393