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Constellation: Difference between revisions
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Due to the rotation of the earth, and the movement around the sun, there are two different groups of constellations: circumpolar and seasonal constellations. Circumpolar constellations are technically always visible; they never "rise" or "set". Where as seasonal constellations are only visible during certain parts of the year, depending on where on the earth they are viewed from. <ref> http://www.windows.ucar.edu/tour/link=/the_universe/Constellations/constnavi.html </ref> | Due to the rotation of the earth, and the movement around the sun, there are two different groups of constellations: circumpolar and seasonal constellations. Circumpolar constellations are technically always visible; they never "rise" or "set". Where as seasonal constellations are only visible during certain parts of the year, depending on where on the earth they are viewed from. <ref> http://www.windows.ucar.edu/tour/link=/the_universe/Constellations/constnavi.html </ref> | ||
Also, constellations are often used to find other constellations or stars of importance. One famous example of this is finding the North Star by examining the Big Dipper and Little Dipper. First one must locate the two stars that form the outer edge of the Big Dipper, then draw an imaginary line straight through the two stars of the dipper edge toward the Little Dipper. The line will point very close to the handle of the Little Dipper; the brightest star in the Little Dipper is at the end of its handle. This is the North Star. | |||
== History == | == History == | ||
