Scientists have known for many years that asteroids often follow planets, moving in the same orbit around the sun. These so-called "Trojan asteroids" have been spotted tagging alongside Jupiter, Mars, and Neptune.
Earth, however, was believed to be free of these celestial stalkers — until now. Astronomers from Athabasca University in Canada, using data from an infrared NASA telescope that's orbiting the Earth, discovered an asteroid tracking us from just 50 million miles away.
Sometime on Oct. 21 of last year, high above the Arctic Circle, a lone missile shot...
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‘This would have been a wild dream a year ago,” says Andrea Ceccolini, standing on Arctic...
Standing in his laboratory, Harvard professor Sean Eddy gazes at a row of vacant work stations....
