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Pastimes : IT CAME FROM OUTER SPACE

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To: Volsi Mimir who wrote (467)	6/17/2005 11:53:39 AM
From: kinkblot	Read Replies (2) of 480

Cosmos 1 solar sail planetary.org online.wsj.com If the sails unfurl, Cosmos 1 will ride on sunbeams. Sunshine may not feel like much, but calculations show that in the void of space it can accelerate Cosmos 1 to 195 miles an hour after one day, and to 10,000 mph after 100. The ship is unlikely to last that long, though. Built as a proof of principle, its 0.005-millimeter-thick sails will degrade, and it should fall back to Earth as a fireball after a month. Launch is scheduled for June 21st, the summer solstice.

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