A recent study that appeared in my news app stated that a team of astronomers had found a group of asteroids orbiting out of the plane of the ecliptic. The astronomers concluded that this group of asteroids had been captured early in our star's history from another star. One of them was an object over a hundred miles in diameter. I think the space agencies should get together and design a space mission to this set of rocks and develop base line data on all the characteristics of the asteroids just as the Dawn mission did, I have no idea how long such a mission would take or the size or cost. That would be something that the scientists would determine in a design definition project.