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Messier 9 or M9 (also designated NGC 6333) is a globular cluster in the constellation of Ophiuchus. It is positioned in the southern part of the constellation to the southwest of Eta Ophiuchi , and lies atop a dark cloud of dust designated Barnard 64.
[9] [10] 2020 — On October 8, 2020, scientists released the largest and most detailed 3D maps of the Universe, called "PS1-STRM". The data of the MAST was created using artificial neural networks and combines data from the Sloan Digital Sky Survey and others. Users can query the dataset online or download it in its entirety of ~300GB.
Other astronomers, using side notes in Messier's texts, eventually filled out the list up to 110 objects. [9] The catalogue consists of a diverse range of astronomical objects, from star clusters and nebulae to galaxies. For example, Messier 1 is a supernova remnant, known as the Crab Nebula, and the great spiral Andromeda Galaxy is M31.
While the Messier catalogue is used by amateur astronomers as a list of deep-sky objects for observation, Moore noted that Messier's list was not compiled for that purpose and excluded many of the sky's brightest deep-sky objects, [1] such as the Hyades, the Double Cluster (NGC 869 and NGC 884), and the Sculptor Galaxy (NGC 253). The Messier ...
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