Messier 2 or M2 (also designated NGC 7089) is a globular cluster in the constellation Aquarius, five degrees north of the star Beta Aquarii. It was discovered by Jean-Dominique Maraldi in 1746, and is one of the largest known globular clusters.

M2 或 梅西耶2，也稱為 NGC 7089，在 虛宿一 （寶瓶座β）北方5度，是位於 寶瓶座 的一個 球狀星團。 它是 喬瓦尼·多梅尼科·馬拉迪 在1746年發現的，是已知最大的球狀星團之一。 喬瓦尼·多梅尼科·馬拉迪 在1746年與 雅克·卡西尼 一起觀測彗星時發現了這個球狀星團。 查爾斯·梅西耶 在1760年重新發現了它，但認為它是一個 星雲，沒有任何恆星與它有關。 在1783年， 威廉·赫歇爾 率先解析出這個星團中的恆星。 在非常好的觀測條件下，肉眼可以直接看見M2。 雙筒望遠鏡 …

2016年6月20日 · We present the results of a wide-field imaging survey of the periphery of the Milky Way globular cluster NGC 7089 (M2). Data were obtained with MegaCam on the Magellan Clay Telescope, and the Dark Energy Camera on the Blanco Telescope.

2015年1月17日 · It is one of the largest known clusters of its kind in the night sky, spanning about 175 light years in diameter. It has the designation NGC 7089 in the New General Catalogue. Messier 2 has an apparent magnitude of 6.3 and is located five degrees north of the bright star Beta Aquarii, which is also known by the traditional name Sadalsuud.

2016年2月9日 · Also known as NGC 7089, Messier 2 is a large globular star cluster located in the constellation Aquarius, 33,000 light years from Earth.

2024年12月19日 · About 55,000 light-years distant toward the constellation Aquarius, this ancient denizen of the Milky Way, also known as NGC 7089, is 13 billion years old. An extended stellar debris stream, a signature of past gravitational tidal disruption, was recently found to be associated with Messier 2.

2024年10月7日 · The Messier 2star cluster (NGC 7089) is a goldmine for scientists and researchers. Study of this stellar ensemble offers key insights into the universe’s age, the processes of stellar evolution, and the movement of galaxies.

Messier 2, aka M2 or NGC 7089, is a stunning example of a globular cluster, a spherically concentrated collection of ancient stars bound together by their own gravitational pull. Situated in the constellation Aquarius, approximately 55,000 light-years from Earth, Messier 2 is an astronomical spectacle teeming with scientific intrigue and discovery.

2019年7月28日 · Messier 2 or NGC 7089, as it is catalogued in the New General Catalogue, is a large Globular Cluster in the constellation Aquarius. Despite being one of the largest clusters (175 light years across), its distance from us (37,500 light years) prevents us from getting a …

NGC 7089, M2, is a tight globular cluster with a dense; core located in the constellation Aquarius. M2 is one of the largest globular clusters. It contains 150 000 stars and; is 55 kly from us. Hover over the picture for an annotated version; Date: 26 September 2024; FOV: cropped to 60' × 40'; the angular size of M2 is about 16'