Caption: Les galaxies peuvent résider en groupes, comme notre groupe local, ou en amas de galaxies. L'amas de galaxies de Fornax est l'un des grands groupes de galaxies les plus proches. Sur cette image prise par le Very Large Telescope Survey Telescope VST (à l'Observatoire européen austral au Chili), on peut voir des galaxies elliptiques (sans structure définie et dans une teinte jaune) mais aussi des galaxies spirales telles que NGC 1365 en bas à droite. Cette galaxie en particulier est classée comme galaxie spirale barrée en raison de sa barre proéminente et bien définie. Le centre de l'amas de Fornax est la galaxie elliptique géante NGC 1399, visible comme la plus grande galaxie à gauche de l'image.
Credit: ESO. Remerciements : Aniello Grado et Luca Limatola credit link

Caption: This Hubble Space Telescope image presents a view of the interiors of the densely packed globular cluster Terzan 9 which consists of millions of stars located close to the heart of our Milky Way galaxy. This globular cluster sits within the central galatic bulge amidst interstellar dust, which obscures light from these star clusters. This image is a combination of light seen in the visible and infrared parts of the electromagnetic spectrum. Multi-wavelength imaging of the color and brightness of stars helps determine their age and in turn age of the parent star cluster.
Credit: ESA/Hubble & NASA, R. Cohen credit link

Caption: Honourable mention in the 2022 IAU OAE Astrophotography Contest, category Still images of celestial patterns.   Taken in Dar Eid in Saint Catherine/Sinai, Egypt, in October 2021, this image shows the Pleiades, an open cluster also known as The Seven Sisters. The Pleiades are located in the north-western part of the constellation Taurus, the Bull. This constellation originates from ancient Babylonian or even Sumerian belief, where it was designated the Bull of Heaven, a mighty creature owned by the sky god. In Late Babylonian times, the Pleiades were called The Bristle at the hunchback of The Bull. In China, the asterism is also called The Hair, but this does not necessarily imply any relationship between the East Asian and West Asian names of this asterism, although exchange is hypothesised with the establishment of the Silk Road. In ancient Babylonian texts the term The Hair does not appear. Instead, the Pleiades are only called The Star Cluster in Sumerian, and the Sumerian term was used in later languages as a loanword. The Sumerian and early Babylonian religion associated all constellations with specific deities, including gods, demons, messengers of gods. The Star Cluster was associated with a deity of the Netherworld that was called The Seven and was considered an ensemble of seven speaking weapons or strongly armed gods. The later Greek name of the Seven Sisters might possibly have sprung from an intercultural misunderstanding of this older religious association, since, in fact, seven stars are not seen in this cluster. The star cluster of the Pleiades is really prominent in the sky, and thus was used for several cultural purposes, such as determining the calendar and the spring equinox. However, its significance is frequently overstated in cultural astronomy. As the tradition of representing it with seven dots originates from an ancient Sumerian belief, we should be careful about interpreting any group of seven dots on cave walls and archaeological sites across Europe, Asia and America from the Stone Age onwards as a representation of the Pleiades. Modern astrophysics has found that the star cluster of the Pleiades is extraordinarily young, so there was certainly not an additional star in ancient times. Furthermore, we know that the bright stars are only the core region of an open star cluster that consists of hundreds of stars scattered over an area of the sky which exceeds the bright core by one or two of its diameters in any direction. The photograph does not even show the whole cluster. The group is thought to be about 400 light-years away from Earth, which is relatively close in astronomical terms.
Credit: Mohamed Usama/IAU OAE