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Venus Transit 2012: Live Coverage Of Tuesday's Astronomical Event

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Kristin Moore
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« on: June 09, 2012, 06:14:36 pm »



Safety in Stargazers

Photograph by Itsuo Inouye, AP

Japanese schoolchildren huddle around a projected image of the sun at the Yokohama Science Center during the 2004 transit of Venus.

Staring directly at the sun without eye protection can concentrate incoming ultraviolet and infrared radiation, damaging retinal cells and possibly causing blindness. To watch safely, observers should always use special "eclipse glasses" or telescopes equipped with solar filters.

Perhaps the safest way to watch the transit of Venus is to make a pinhole camera, said Pasachoff, who is also a National Geographic Society Committee for Research and Exploration grantee. (National Geographic News is a division of the Society.)

To do so, cut a hole about a quarter-inch (0.6-centimeter) wide in a piece of cardboard paper, and use the hole to project an image of the sun onto a flat surface, such as a wall or sidewalk.

Published June 4, 2012
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