Messier 69 or M69, also known NGC 6637, and NGC 6634, [9] [10] is a globular cluster in the southern constellation of Sagittarius. [a] It can be found 2.5° to the northeast of the star Epsilon Sagittarii and is dimly visible in 50 mm aperture binoculars. The cluster was discovered by Charles Messier on August 31, 1780, the same night he ...

2024年8月25日 · M69 is one of the most metal-rich globular clusters ever observed. In astronomy, the term “metal” refers to any element heavier than the two most common elements in our universe, hydrogen and helium. The nuclear fusion that powers stars created many of the metallic elements in nature, from the calcium in our bones to the carbon in diamonds.

2015年7月14日 · Messier 69 (M69) is a globular star cluster located in the southern constellation Sagittarius. The cluster lies at a distance of 29,700 light years from Earth and has an apparent magnitude of 8.31. It is one of the fainter globular clusters listed in Messier’s catalogue. Its designation in the New General Catalogue is NGC 6637.

2018年5月7日 · One of these objects is known as Messier 69 (NGC 6637), a globular cluster located in the constellation Sagittarius. Located about about 29,700 light-years away from Earth, this cluster lies...

2023年8月9日 · This dazzling image shows the globular cluster Messier 69, or M 69 for short, as viewed through the NASA/ESA Hubble Space Telescope. Globular clusters are dense collections of old stars. In this picture, foreground stars look big and golden when set against the backdrop of the thousands of white, silvery stars that make up M 69.

2023年4月17日 · This dazzling image shows the globular cluster Messier 69, or M 69 for short, as viewed through the NASA/ESA Hubble Space Telescope. Globular clusters are dense collections of old stars. In this picture, foreground stars look big and golden when set against the backdrop of the thousands of white, silvery stars that make up M 69.

Messier 69 (M69, NGC6637) is a globular cluster that has a distance from Earth of 29,700.00 light years. It can be found in the constellation of Sagittarius. It was discovered in 1751 by Abbe Nicholas Louis de la Caille.

M 69 is one of the most metal-rich globular clusters, more than ten times that in globular clusters of a comparable age. By the way, in astronomy all elements are called metals, which are heavier than the two most common elements hydrogen. The nuclear fusion inside the stars produced elements occurring in nature up to and including iron.

2021年11月8日 · Messier 69 is a globular star cluster located in the southern constellation Sagittarius. M69 is one of the most metal-rich globular clusters ever observed, which is heavier than hydrogen and helium. The stars in M69 have over ten times more iron than stars in other globular clusters of the same age.

This is one of three globular clusters in Messier's catalog (along with M54 and M70) that can be found along the bottom of the Sagittarius "teapot" shape. Years ago, viewing all of these clusters on the same night through a 13.1-inch reflector, I found Messier 69 the easiest of the three to resolve into individual stars.