Constellations can be a useful way to help identify positions of stars in the sky. Constellations have imaginary boundaries formed by "connecting the dots" and all the stars within those boundaries are labeled with the name of that constellation.
Around 350 BC, the great Aristotle declared that the Earth was a sphere (based on observations he made about which constellations you could see in the sky as you travelled further and further away from the equator) and during the next hundred years or so, Aristarchus and Eratosthenes actually measured the size of the Earth!
Constellations Introduction: 1. Review the difference between a star, a constellation and a galaxy 2. Read several short examples of myths explaining constellations. There are several short myths on-line in the Universe activity section of StarChild.
