Talk:Kalgash

Fair use rationale for Image:Nightfall cover.jpg
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BetacommandBot (talk) 14:59, 8 March 2008 (UTC)

Solar eclipse image?
The image is probably inaccurate/misleading since it is that of an eclipse of the Sun by a body of almost equal angular diameter -- the Moon, thus our solar eclipses last only a few minutes. Whereas the red dwarf star Dovim in the novel is eclipsed by a body of much larger angular diameter, Kalgash II, about 7 times as large; the book mentions that there are approximately 4 hours from first contact to totality, so the totality itself last about a day (i.e. enough to plunge the whole planet in darkness at least once for several hours as it revolves, again as the book says). Because Kalgash II is so much larger than Dovim in its angular diameter (compared to the Moon and the Sun), the star's corona would not be visible beyond the first few hours of totality, and even then it would have an asymmetric appearance. Unless Dovim is a red (super)giant rather than a red dwarf -- the book says nothing about its mass, only its angular diameter.