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Aqua regia
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Individual heating
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Hymenoptera
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Americium
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Small planet
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Dew
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Acidic sulphated soil
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Muon
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TSI
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Glioblastoma
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Spinel structure
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Taikonaut
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Asphyxia
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Supercritical fluid
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Grading
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Symptom
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Botulinum toxin
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Concomitant
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Diabetic
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Emulsion
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M63
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Granulocyte
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Electrical impedance
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Graben
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White cell
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Special protection area
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Listeria
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Big Crunch
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Caulinary
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Endoderm
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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