Thank you very much for this cool article. It gives a nice overview of the current state of space mining. I also wish we would start mining within the next 20 years. On our way we will gain valuable experience in space travel, manipulating large objects in space, and also how to build spaceships that can fly between earth, moon and mars on a regular basis. Today most spaceships just have enough fuel for one roundtrip and cannot take a "visit" to a new location. Once we have the new ion propulsion engines, space travel will make a huge jump forward.

Can´t wait for that!