Answers

2016-01-26T16:20:38+05:30
Actually all stars move. but polaris seems to be fixed because it revolves similarly to sun in the space that makes it appear to be fixed.
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2016-01-26T16:33:26+05:30
The fixed stars are celestial objects that do not seem to move in relation to the other stars of the night sky. Hence, a fixed star is any star other than the Sun. A nebula or other starlike object may also be called a fixed star. People in many cultures have imagined that the stars form pictures in the sky called constellations. InAncient Greek astronomy, the stars were believed to exist on a giant celestial sphere, or firmament, that revolves daily around Earth.
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