[{"text_idx": "#000001", "text": "How to Prevent Space Pollution?"}, {"text_idx": "#000004", "text": "How is the Space Shuttle Launched?"}, {"text_idx": "#000005", "text": "A space shuttle is a vehicle with a very powerful jet engine designed to"}, {"text_idx": "#000006", "text": "What are Astronomical Objects and Systems?"}, {"text_idx": "#000007", "text": "The science of astronomy is a science that deals with space and objects that"}]