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Ischaemic
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Skeletal muscle
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Magic number
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MD4
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Tectrix
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Colony
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Diffie-Hellman
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Pandemic
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Sand-dwelling
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Inherited
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Common broom
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Neoteny
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Respiration
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Hypoxia
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Environmental remediation
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Agonist
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Soot
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Epicanthus
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Turbopump
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Uranus
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Acetylcholine
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Dielectric
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Crest
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Stolon
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Zodiacal light
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Nanotechnology
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BaBar
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Water primrose
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Nitrogen vehicle
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Permian
M101
M101 is a beautiful spiral galaxy seen face-on in the constellation of Ursa Major. Its apparent size is nearly a full Moon, but its extent and fine spiral arms can only be observed through a large telescope.
It is 27 million light-years away and is the brightest in a group of at least 9 galaxies.
Photographed by "baf" (the person's pseudonym on the astro forum) using a digital reflex camera fitted behind a 150 mm diameter telescope.
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