A new asteroid-deflecting idea proposes that paintballs shot into space could prevent a dangerous asteroid from colliding with Earth. The initial force from the paintballs would veer the asteroid slightly off course. The paint resulting from the splattered pellets would more than double the asteroid's sunlight reflectivity. The increase of photons bouncing off the rock's surface would enhance solar radiation pressure and bump it further off course. The strategy, unveiled in October, won the 2012 Move an Asteroid Technical Paper Competition, sponsored by the United Nations' Space Generation Advisory Council.

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