When to watch the spectacular Geminid meteor shower this week. NASA says skies are ideal for viewing it.

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geminid shower kenneth brandon
Skywatcher Kenneth Brandon wrote, "This shot is a composite of about 700 frames from a time-lapse I took in Big Sur, CA. I found 61 frames with meteors in them. Then I stacked the frames and created masks for each meteor. "

Kenneth Brandon

The world's top alien hunters explain why a Harvard physicist's discovery of 'alien' tech is likely a false alarm

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Avi Loeb Stephen Hawking 2016.JPG
Physicist Avi Loeb, right, on stage with physicist Stephen Hawking and others in New York in 2016.

Lucas Jackson/Reuters

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