Researchers stitched together hundreds of images from the Very Large Telescope to form a breathtaking photo of a nearby galaxy.
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They’re heavily promoted. Your optometrist may even prescribe them. But when we looked at the evidence, this is what we found.
Fireflies’ summer evening light shows are a delight for humans, but for the insects they are a crucial mating ritual – and human-caused light pollution is a buzz kill.
Photons stream from the sun and interact with all matter on Earth. Depending on what the light touches, some of the photons will get absorbed or soaked up. And some will bounce back.
Top contributors
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Climate Scientist, Australian Bureau of Meteorology
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Professor of Biology, Tufts University
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Associate Professor in Optometry and Vision Sciences, The University of Melbourne
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PhD Candidate in Biology, Tufts University
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Ph.D. Student in Astronomy, The Ohio State University
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Professor of Astronomy, The Ohio State University