How to Colonize an Asteroid
Gravity is one one the binding forces of our universe, but it is not immutable. Experimental evidence has shown {R.?} that a spinning electromagnet can lessen or cancel the forces of gravity, and anti-matter particals have the equivalent of an antigravity force. Unfortunately, these phenomona are limited to very small events in large (expensive) scientific laboratories. The promise is that these things are no longer only in the realm of science fiction, but will in fact be part of the human experience at some point in the future.
Stay tuned though, a breakthrough in comprehension could occur at any moment!