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Looking Skyward: Northern Lights put on a show

NASA/Josh Cassada
NASA astronaut Josh Cassada shot this photo and called the sight "absolutely unreal."

Lately the Northern Lights have been giving sky-watchers some spectacular nighttime shows. CAI's John Basile talks with Dr. Regina Jorgenson of the Maria Mitchell Observatory on Nantucket about what's causing all this activity.

John Basile is the local host of All Things Considered weekday afternoons and a reporter.