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Giant magnetoresistance
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Database
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Sodium-rich rock
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Microgravity
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Anti-hormone
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Lactitol
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AIDS
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Anxiolytic
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Adduct
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Node
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Beta lactam
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Combined pill
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Hydroxyzine
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Acari
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Fault
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Black walnut
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Ginkgo
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Adipocyte
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Risk factor
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Hard disk
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Meridian
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Macrophage
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Exoprosthesis
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RGB
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RC2
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Oceanic mixed layer
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Transatlantys
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Auditory evoked potential
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Sub-addressing
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Pseudomorph
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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