How many microscopes are made each year?

What happened to the eagle after they left on the moon and got on the Columbia? What elements are likely to be formed in the sun at some time in its life? How does peters plan to get a group of people to a safe place Number the stars? Does the sun have a surface? how many lightyears is  the univerce in diamitor? Which of these women is associated with the space shuttle Challenger disaster? Why we do not see the shadow of an airplane flying at a height? Define true zenith distance n meridional zenith distance? How long does it take mars to make a full rotation around the sun? Who was the first person to go on uranus? How old was Michael Collins when he went to the moon? Who invented the 69 posistion? Does the reddish color of Mars' surface come from its soil? What are the bright filaments of hot gas that erupt from the corona of the sun? What signs to look for to tell if a girl is instrested in me? Did Amelia Earhart ever go to Purdue? When was the last space shuttle launched? What Apollo landed on the moon? What Phase of the moon that immediately precedes the new moon phase? Are there bottomless craters on the moon?