To Lasso an Asteroid

Officially, it’s called the Asteroid Initiative.

The plan was incented by President Barack Obama's call for NASA to send a manned mission to a near-Earth asteroid by 2025, and then aim for flight to Mars in the 2030s.

NASA's initiative offered a number of advantages. It was new and novel; no human had visited an asteroid before. And with very little gravity, the project didn’t require expensive landers and ascent vehicles.