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Earth had close encounter with a 40-yard-wide asteroid
Earth had a close encounter with a 40-yard-wide asteroid this week, but the astronomer who first reported the large rock says it's no big deal.
Asteroid 2009 DD45, thought to be between 68 and 152 feet across, passed within 38,000 miles of Earth Monday - a close call in astronomical terms, at less than twice the height of the geostationary satellites we depend on for communications, according...
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