91¶¶Òõ

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91¶¶Òõ

Last updated

21 January 2015

ppt, 528 KB
ppt, 528 KB
Intrinsic brightness Observed brightness Parallax Seconds of arc
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Reviews

4.5

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schakravarty

11 years ago
5

Great resource!!! thanks

hanmphillips

15 years ago
4

Great resource for explaining the ideas clearly, many thanks

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