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Two asteroids to pass close to Earth, but won't hit: NASA

by Staff Writers
Washington (AFP) Sept 8, 2010
Two asteroids were set to pass close to Earth on Wednesday but posed no risk, the US space agency NASA said.

NASA said its sky observation from Arizona discovered the objects on September 5. One asteroid was believed to be 10 to 20 meters (32 to 65 feet) in size and was expected to pass within 248,000 kilometers (154,000 miles) of Earth at 0951 GMT.

The second object estimated to be six to 14 meters (20 to 45 feet) in size was set to pass within 79,000 kilometers (49,000 mile) 2112 GMT.

"Both objects should be observable near closest approach with moderate sized amateur telescopes," NASA said. "Although neither of these object has a chance of hitting Earth, a 10 meter-sized near-Earth asteroid from the undiscovered population of about 50 million would be expected to pass almost daily within a lunar distance, and one might strike Earth's atmosphere about every 10 years on average."

NASA estimates that asteroids smaller that 25 meters in diameter would burn up while entering the atmosphere, and cause no damage.



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IRON AND ICE
Asteroid survey gathers mixed bag
Washington (UPI) Sep 2, 2010
A survey of near-Earth asteroids shows they come in a far wider variety of shapes, sizes and surfaces than previously thought, U.S. researchers say. The findings are based on infrared scanning of about 100 asteroids by NASA's Spitzer Space Telescope, SPACE.com reported Thursday. The effort is part of a larger Spitzer telescope project to look at 700 near-Earth objects to identify ... read more







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