How do rockets fly?

3…2…1… Blast off! Rockets launch things into space, which is no easy task. They have to push off from the Earth and zoom at great speeds to break free from gravity. But how do they do it? What makes them different from airplanes? We asked NASA aerospace engineer Erik Axdahl to help us find the answer. Got a question that’s launched you into a tizzy? Send it to us at BrainsOn.org/contact, and we’ll jet off to find an answer! See omnystudio.com/listener for privacy information.