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Asteroid 'size of Egypt's Great Pyramid of Giza' to skim past Earth at 60 times speed of sound
A "potentially hazardous" asteroid the size of a pyramid will skim past Earth today, Nasa has revealed. The space rock, known ...
Earth 1, asteroids 0: The next generation of planetary defense takes shape at JPL
The NEO Surveyor fulfills a 2005 act of Congress ordering NASA to catalog 90% of near-Earth objects larger than 459 feet (140 ...