Planetarium professionals, teachers, and other educators have always had a thorny problem with observing: Most students are available only during daylight hours. It’s difficult to get students ...
HYERES, France, Aug. 21 (UPI) -- A French inventor has created the Solarscope, a device that makes it safe to look at the sun during a solar eclipse. Yan Cornil, president of Light Tec Optical ...
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