In the springtime sky, the Big Dipper is standing on its handle. But this easy-to-recognize shape is not officially a constellation. It’s the rear end and tail of Ursa Major, the big bear. Ursa Major, ...

If you sit back in a lawn chair facing northward after twilight on these late spring evenings and tilt your head toward the overhead zenith, the Big Dipper will leap out at you, hanging diagonally by ...

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