Rich seams of Earth's secret moons

New Scientist Tuesday 24th April, 2012

A new company backed by Google founder Larry Page and film director James Cameron will later today unveil its plans to mine near-Earth asteroids for precious metals, such as platinum. Mining on an asteroid is fraught with difficulty due to the space rock's low gravity and the fact that it is hurtling through space. The job is made much easier if the asteroid is captured by Earth's gravity and becomes a temporary mini-moon. Here we describe how su...

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