by Nicholas Ross
The bright star is Polaris; the centre of the circle it produces is the north celestial pole and the point at which the night sky appears to rotate. The different colours are produced by different types and temperatures of the stars, with blue being the hottest and red/orange the coolest.
The bright star is Polaris; the centre of the circle it produces is the north celestial pole and the point at which the night sky appears to rotate. The different colours are produced by different types and temperatures of the stars, with blue being the hottest and red/orange the coolest.
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