Messier 22 or M22, also known as NGC 6656 or the Great Sagittarius Cluster, is an elliptical globular cluster of stars in the constellation Sagittarius, near the Galactic bulge region. It is one of the brightest globulars visible in the night sky.

2024年9月12日 · Messier 22 is one of about 150 globular clusters in the Milky Way, and at just 10,000 light-years away, it is also one of the closest to Earth. While scanning the night sky in search of Saturn in August of 1665, the German amateur astronomer Abraham Ihle made an amazing discovery: the globular cluster Messier 22.

M22 (NGC 6656)是天空中最好观测的球状星团之一，只比南天半人马座的ω星团和杜鹃座47逊色，它也是北半球可见最亮的球状星团之一和银河系众多球状星团中的一员，同时也是离地球最近的球状星团之一。 M22在人马座区域，是个结构松散的球状星团，用8英寸 (20厘米)望远镜可以很好的观测，甚至能分辨出它中心部分很多单个恒星。

2015年4月15日 · Messier 22 (M22) is a globular cluster located near the Milky Way bulge, the tightly packed group of stars near the galactic centre. The cluster lies in the constellation Sagittarius. It is one of the brightest globular clusters in the sky and was one of the first objects of this kind to be discovered and studied.

Messier 22 is one of the most magnificent globular clusters in the entire sky and even exceeds M 13 in the constellation Hercules in terms of size and brightness. M 22 is only surpassed by ω Centauri and 47 Tucanae. The discovery of M 22 is often attributed to the obscure German astronomer Abraham Ihle in 1665.

2015年4月10日 · This image shows the center of the globular cluster Messier 22, also known as M22, as observed by the NASA/ESA Hubble Space Telescope. Globular clusters are spherical collections of densely packed stars, relics of the early years of the Universe, with ages of typically 12 to 13 billion years.

2016年8月8日 · Messier 22 is one of only four known globular clusters that contain a planetary nebula. This nebula – catalogued as GJJC1 or IRAS 18333-2357 – is rather small and young, being only 3 ...

Messier 22 (NGC 6656), also known as the Sagittarius Cluster, is a globular cluster located in the constellation Sagittarius, in the Galactic Center of the Milky Way Galaxy in the Local Group of galaxies. M22 is 10600 light years away from Earth. M22 is best viewed during late summer, is magnitude 5.1, and can be viewed with naked eye (barely).

M22 is a magnificent globular cluster located in the constellation of Sagittarius and one of the best objects of its type in the night sky. With a magnitude of +5.1, the cluster is visible to the naked eye under dark skies and also the brightest globular in the Messier catalogue.

Messier 22 or M22 (also designated NGC 6656) is a globular cluster in the constellation Sagittarius. It has an apparent visual magnitude of 5.1 and its angular diameter is 24 arc-minutes. M22 lies at an estimated distance of 10,400 light years.