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Ductule
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Exo-Earth
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Vaginal examination
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Pear
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Hall effect
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Isthmus
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Euthanasia
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Hashimoto's thyroiditis
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Leachate
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Twofish
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Dorsiflexion
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Kilo base
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Vickers hardness index
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Metasomatic
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Cilia
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Proline
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Floppy disk
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MDLP
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Galvanometer
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CEPT
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Calvin cycle
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Chromatin
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PGP
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Phycocyanin
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Satellite orbit
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Allopatry
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Ambulatory
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i-Link/S400
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Polymer
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Jurassic
The Dumbbell nebula
This was the first nebula discovered by MESSIER in 1764.
It also looks like an apple core; what can be seen is the gaseous envelope ejected by a dying star in the centre of the nebula.
M27 is a remarkable object through a pair of binoculars because of its apparent size (half a full Moon) and its brightness (magnitude 7.4).
This is a 35 minute exposure photograph using a CCD camera behind a 15 cm telescope. picture by Chamois.
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