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Stars
Part 1 of Paper
....t 150 BC He ranked the he could see in terms of their brightness,
with 1 representing the brightest down to 6 representing the faintest. Modern
astronomy has extended this system to stars brighter than Hipparchus' 1st
magnitude stars and ones much, much fainter than 6.
As it turns out, the eye senses brightness logar.... Part 2 of Paper
....itudes are how bright a star would appear from some standard
distance, arbitrarily set as 10 parsecs or about 32.6 light years. Stars can be
as bright as absolute magnitude -8 and as faint as absolute magnitude +16 or
fainter. There are thus (a very few) stars more than 100 times brighter than
Sirius, while hardly any are known fainter than Wolf 356.
Star, large celestial body composed of gravitationally contained hot gases
emitting electromagnetic radiation, especially light, as a result of nu.... |
| Number of words: 817 - Approximate pages: 3 |
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