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killian killian
wrote...
Silver Member
Posts: 6024
9 years ago
A standard candle is ________.
A) a 7-cm-long wax candle
B) a light source of known luminosity
C) another name for a main-sequence star
D) another name for a barred-spiral galaxy
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Answer accepted by topic starter
padrepadre
wrote...
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Educator
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Posts: 21610
9 years ago
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Mastering in Nutritional Biology
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killian Author
wrote...
Silver Member
9 years ago
Thx man
Smiling Face with Open Mouth
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