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The Northern Lights set the skies aglow Friday and Saturday across the Bay Area, and beyond, giving skywatchers a spectacular show. The Northern Lights are caused by solar wind—streams of ionized gas originating from the Sun that interact with the Earth’s magnetic field, according toNational…

The Northern Lights set the skies aglow Friday and Saturday across the Bay Area, and beyond, giving skywatchers a spectacular show. The Northe…

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Cheerful sunshine illuminated the tiny, just-hatched leaves of maple trees. Their pinks and greens complimented the blue sky perfectly. A few …

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