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Why can't astronomer measure the parallax of a star that is a million lights away?
Wiki User
∙ 13y ago
The farther the object, the smaller its parallax. In this case, the parallax is about 1/300,000 of an arc-second (and an arc-second is 1/3600 of a degree) - way too small to measure. Perhaps you will eventually find a way to measure smaller parallax angles.
Wiki User
∙ 13y ago
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