Putting people on the moon was a huge accomplishment for the human race, but how do you top it? A manned mission to Mars is the ultimate plan, but there are still some technical hurdles to overcome, like faster spaceship propulsion.
In the meantime, there are other projects brewing like more probes to explore the solar system, asteroid mining and giving the moon a moon. Wait, what was that last one?
Yes, NASA has a plan in place to put an asteroid in orbit around the moon. OK, not a whole asteroid at first.
The full plan is to send a robot to an asteroid that's passing by, break off a boulder about 30 feet in diameter, and then use a gravity tractor beam to maneuver it into lunar orbit. It sounds like science fiction, but it's actually not as far-fetched as it sounds.