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GDP
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Spectrum
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Bone densitometry
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Winter squash
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Minimum viable population
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Bioenergy
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Blood cell
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Placenta
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Emihedrism
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Nicol
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Soma
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CloudSat
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Annular eclipse
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Scambaiting
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Riparian
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Elongated facies
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Declination
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Geoid
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Genetic disease
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eMule
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Clavicle
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Constellation of Auriga
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Svalbard Global Seed Vault
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Polyunsaturated fatty acid
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Peptide bond
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Spindle
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American space shuttle
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Exoprosthesis
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Volcanism
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Bolide
M15
M15 is a fine globular cluster in the constellation of Pegasus 34,000 light-years away. In a dark sky, it can be seen with the naked eye as a small blurred spot. M15 has an extremely dense nucleus; this density might be caused by a very massive object (a black hole?) which might hold many stars in a relatively small volume.
With a 10 min. exposure using a CCD camera and a 150 mm telescope, "Chamois" (the person's pseudonym on the forum) captured this cluster.
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