Artist's concept of the Deep Space Industries Firefly satellite (Image: Deep Space Industries)
Orbit of asteroid 2012 DA14 (Image: NASA)
Artist's concept of asteroid 2012 DA14 and Earth (Image: JPL/NASA)
On the same day that a meteor exploded over Russia injuring almost a thousand people and an asteroid passed too close to Earth for comfort, the asteroid-mining company Deep Space Industries (DSI) proposes setting up sentry lines in space to track and study rogue asteroids posing a threat to Earth. Using technology originally intended for prospecting for water and minerals on asteroids, the sentry lines of satellites would provide information for deflecting potentially dangerous near-Earth objects.
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