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2. Morgan dollar - Wikipedia

   en.wikipedia.org/wiki/Morgan_dollar

   The Morgan dollar is a United States dollar coin minted from 1878 to 1904, in 1921, and beginning again in 2021 as a collectible. It was the first standard silver dollar minted since the passage of the Coinage Act of 1873 , which ended the free coining of silver and the production of the previous design, the Seated Liberty dollar .

3. Messier object - Wikipedia

   en.wikipedia.org/wiki/Messier_object

   Charles Messier. The first edition of 1774 covered 45 objects (M1 to M45). The total list published by Messier in 1781 contained 103 objects, but the list was expanded through successive additions by other astronomers, motivated by notes in Messier's and Méchain's texts indicating that at least one of them knew of the additional objects.

4. Charles Messier - Wikipedia

   en.wikipedia.org/wiki/Charles_Messier

   Charles Messier (French: [ʃaʁl me.sje]; 26 June 1730 – 12 April 1817) was a French astronomer. He published an astronomical catalogue consisting of 110 nebulae and star clusters , which came to be known as the Messier objects , referred to with the letter M and their number between 1 and 110.

5. 1893-S Morgan dollar - Wikipedia

   en.wikipedia.org/wiki/1893-S_Morgan_dollar

   In 2021, a PCGS graded An 1893-S Morgan dollar in MS-67 sold for US$2,086,875.00. [6] The coin is considered to be the finest known and it is named the Vermeule 1893-S. [ 1 ] In March 2023 an 1893-S graded by Numismatic Guaranty Company (NGC), in a MS-64, grade sold for US$372,000.

6. Messier 102 - Wikipedia

   en.wikipedia.org/wiki/Messier_102

   Messier 102 (also known as M102) is a galaxy listed in the Messier Catalogue that cannot be unambiguously identified. Its original discoverer Pierre Méchain retracted his discovery two years after publication and said that it was a duplicate observation of Messier 101 . [ 1 ]

7. Messier 87 - Wikipedia

   en.wikipedia.org/wiki/Messier_87

   The French astronomer Charles Messier discovered M87 in 1781, and cataloged it as a nebula. M87 is about 16.4 million parsecs (53 million light-years) from Earth and is the second-brightest galaxy within the northern Virgo Cluster, having many satellite galaxies. Unlike a disk-shaped spiral galaxy, M87 has no distinctive dust lanes.