On April 10, 2013, the White House and NASA released details of the US space agency's budget for the 2014 fiscal year. Included in the budget was a request for over $100 million to begin work on the Asteroid Retrieval and Utilization Mission. The mission would see a robotic spacecraft rendezvous with a small asteroid, which would then steer the space rock to the Earth-moon libration point (EML2) -- a region of gravitational stability beyond the far side of the moon. A manned mission would then meet the "tamed" asteroid to carry out science in-situ. It has been determined that such a mission would optimize the scientific gains while reducing risk and cost.
On Wednesday, NASA released an animation detailing the stages of asteroid capture, here are the highlights.