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The North Star (Polaris) varies so slightly from the true north that we may, for practical purposes, consider it true north. The North Star is easily identified by the pointers of the "Big Dipper."

Astronomical Compass

The North Star (Polaris) varies so slightly from the true north that we may, for practical purposes,…

Ursa Major or Great Bear or Big Dipper constellation.

Ursa Major

Ursa Major or Great Bear or Big Dipper constellation.