The Big Dipper isn't a constellation!
It is technically considered to be an 'asterism' since it is a small part of a larger constellation, Ursa Major. An asterism is a pattern of stars that is recognized against Earth’s night sky. But wait - isn’t that what a constellation is also? Well, colloquially, yes...but modern astronomy now defines constellations as entire sections of the celestial grid. Recognized on an international level, these areas are not limited to just the traditional line patterns connecting various stars. Therefore, in the same way that the Big Dipper is found inside Ursa Major, Orion's Belt is also an asterism within the Orion constellation!
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