Seeker Plus

In 2013 NASA introduced an asteroid-capture mission called ARM (Asteroid Redirect Mission) which would bring an asteroid to moon's orbit.____________________Sources:The Evolution Of NASA’s Ambitious Asteroid-Capture Mission:https://www.space.com/28963-nasa-asteroid-capture-mission-history.html“NASA's ambitious asteroid-capture mission has changed a lot since the agency officially announced its existence less than two years ago. The original plan, which was revealed in April 2013, called for dragging an intact small space rock into orbit around the moon, where it would be visited by astronauts, perhaps as early as 2021."Animation Of Proposed Asteroid Retrieval Mission Video:https://www.youtube.com/user/VideoFromSpace“NASA's 2014 budget poposes a mission to robotically capture a small near-Earth asteroid and bring it into a stable lunar orbit where astronauts can visit and explore it, a 'stepping stone' to future missions to farther asteroids."Asteroid Retrieval Feasibility Study:https://www.rt.com/usa/158784-n