NASA telescope to study 'city-killer' asteroid in 'emergency' decision as odds of striking Earth go up
NASA is using its most powerful space telescope to study the true size of the "city-killer" asteroid that has a one-in-43 ...
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Asteroid's odds of hitting Earth went up. Scientists aren't surprised.
Scientists found a compelling reason why. Telescopes will refine the asteroid's orbit around the solar system over the coming months, until it travels too far away to observe (it will return again ...