How did aurora get its name?

How do you explain the phenomenon of lights flying in a straight line? What happens when it drizzle? Why is Yuri Gagarin famous? Why are bright colors difficult to see in a room lot candles? How does moon shadow's character change througout dragonwings? Does Saturn have any craters? Where do tornadoes most likely occur at? Why is the term planetary nebula a misleading way to describe the ring of expanding gas thrown out by a red giant during its transformation into a white dwarf? What is a large energy producing object in space made up of gases? How do you read a planisphere? What is the likelihood that other forms of intelligent life exist in other forms on other planets? Do astronauts need to do laundry in space? Why did the Space Shuttle Challenger blow up in 1986? What tide occurs when the gravity of the sun and moon pull earths surface in opposite directions? When did the race to the South Pole start? What planets make up your solar system? Will the lights flying in a straight line in 2023 be a sign of something extraordinary happening"? Why is Indian astronomy important in India? How do light create a rainbow? What materials are needed to live on the moon?