At different times of the year we can see
different stars in the night sky. The positions of
the stars relative to each other in the sky stay
the same; because the stars are so far away
compared with the distance that the Earth travels
in a year, changes in the Earth´s position do not
shift our point of view enough to change patterns
that the stars make in the sky. What does change
is what part of the sky we are looking at. Since
you can only see the stars at night, when your
side of the planet is facing away from the Sun,
you can only see the stars that are in your view
if you are looking away from the Sun. As the Earth
goes around the Sun, the direction you are looking
at night changes so you see different stars.
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