Grab objects by pressing space while near them. Release them by releasing space, or throw them by pressing f before releasing. Don't fly off the edge! WHY THIS WORKS Newton's third law of motion states that every action has an equal and opposite reaction. This is how everything moves. When you walk, you push back on the ground, and an opposite force pushes you forward. The same would apply in space. If you pushed forward against an object, or threw something forward, the force would propel you backward. Smaller objects would give less force but still propel you somewhat. A smart man, Newton was. He discovered that when you don't move something it doesn't move. Oh, and he invented Calculus. That's cool too.
Sorry, the art isn't very good. My priority was getting the code to work and not making it look great.