Asteroids
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Poll Suggests Americans Care More About Asteroid Threat Than Mission to MarsAmericans prefer a space program that focuses on potential asteroid impacts and using robots to explore space over sending humans to Mars an AP co-sponsored poll shows.

Asteroid to Pass Earth on Friday; 2nd Close Fly-By of the WeekA newly-discovered space rock will pass within 39,000 miles of Earth on Friday afternoon. That's less than one-fifth the distance to the moon.

NASA Reveals Plan To Redirect Asteroid Chunk Into Moon's OrbitNASA revealed its plans Wednesday to fly robotic spacecraft to asteroids by the end of the decade.