Hi guys, Wacky idea, Could we use a combination of balloons and spacecraft to place objects into orbit? A balloon could be used to attain altitude and reduce air resistance but the problem faced is that we need to reach a high velocity to escape the earths gravitational field. The problem is velocity, a source of velocity is needed to impart on our platform at a high altitude. Could we use something from space to impart the velocity to our object? Why can't we use the moons slingshot to impart a large increase in velocity on any spacecraft which can then be used to pick up our platform at a high altitude and give it the necessary escape velocity? This piggy back craft could be re used and slingshot around the moon again to increase the velocity for another. Is this a stupid idea?