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Channel B
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Symbian
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Green sea turtle
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Digitalin
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Embryonic layer
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Shark feeding
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Wood energy
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"Goussaud" morphology
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Cryptology
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Vagina
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Autosome
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Clavicle
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Pyrophyllite
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Moraine
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Reionisation
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Global energy balance
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Osteoporosis
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Heterozygote
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Anisodactyl
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Optoelectronics
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Ambulatory
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Batesian mimicry
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Radio telescope
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Epigastric
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Fossils
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Chemotherapy.
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Garden strawberry
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Anorexia
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Luminance
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OB association
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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