What is the upside-down compass?

How much does a meteor weigh? What war was the space race a part of? How big do tornadoes get in diameter? Can nuclear bomb explode in space? What is the name of the place where you can go see the stars and the planets? What does Zeus do in his everyday life? Why did the Greeks depend on Apollo? What happens to the radial distance of the event horizon as more and more mass falls into a black hole? What sounds were heard when hawk eye chingachgook uncas and the travelers reached glenns falls? May I see a 1983 calendar? Is the moon always in the same spot in the sky at the same time each night? How do you spell star in Chinese? What are some cool planet fact? How many Apollo landings were there on the moon? The national air and space agency is located in which city? What Greek scientist invented the Greek calendar? What is the chemical formula for wheat? What pieces of technology expand the sense of sight? Is a blue star a dying star? What is a swift-moving cloud of purnice and ash?