question: What can spacecraft use to fly?
choices.text: liquids satellites rockets hovercraft missiles jetpacks air masses Gravity
choices.label: A B C D E F G H
fact2: All rockets operate on the same basic principles of propulsion.
combinedfact: spacecrafts can fly with rockets
formatted_question: What can spacecraft use to fly? (A) liquids (B) satellites (C) rockets (D) hovercraft (E) missiles (F) jetpacks (G) air masses (H) Gravity