How can an observer use the Big Dipper to locate Polaris?

Answer

By extending an imaginary line through the two outer edge stars of the cup about five times their distance.

To find Polaris, one locates the two stars forming the outer edge of the Big Dipper's cup (Merak and Dubhe), draws an imaginary line through them, and extends it about five times that distance to find the North Star.

How can an observer use the Big Dipper to locate Polaris?

#Videos

Why is the North Star Always in the Same Place? - YouTube

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