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Science-Related Homework Help Physics Topic started by: staedtler on Mar 21, 2017



Title: We know that stars in our local region of the Universe are moving relative to one another. Why then, ...
Post by: staedtler on Mar 21, 2017
We know that stars in our local region of the Universe are moving relative to one another. Why then, do we not see the patterns made up by them, the constellations, changing night by night?

(a)   The stars in the sky are at very large distances from us, and their nightly motions relative to one another are not easily detected.
(b)   The stars we see are all moving directly away from us and from our viewpoint they do not appear to be moving.
(c)   The stars in each constellation are part of a “moving group”, all moving the same direction, so their position relative to each other does not change.


Title: Re: We know that stars in our local region of the Universe are moving relative to one another. Why ...
Post by: hyponotica on Mar 21, 2017
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Title: Re: We know that stars in our local region of the Universe are moving relative to one another. Why then, ...
Post by: staedtler on May 1, 2017
I really appreciate your help!