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Salmonellosis
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Chalcophile
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Lamellar bone
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Ribonucleotide
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Myelin
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Buruli ulcer
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RIPE-MD
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Rift
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CHAP
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Taxon
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NIAID
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Valence electron
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Hooklet
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Catchall
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CTP
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Axon
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Oil producing plant
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Gamma globulin
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Family
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Psychosocial
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Tarragon
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Transalaska
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PC
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Acinar
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Ubiquitin
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Sinistral snail
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Cellulite
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Key length
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Cytostatic
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Immunomodulator
M2
M2, which is the second object in the Messier catalogue, is a globular cluster in the constellation of Aquarius. Discovered by Maraldi in 1786, it has about 150,000 stars and is very dense.
It can be seen with the naked eye in a clear sky; its apparent diameter is equivalent to half a full Moon.
Picture taken using a CCD camera and a 150 mm diameter telescope, by "Chamois" (the person's pseudonym on the forum)
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