1. The star Trappist I has just been discovered to have 7 earth-size planets with the possibility of having life on them.  Trappist is an acronym for what?
  1.  What is universally accepted as the first labour-saving device for the home?
  1. What is a unicorn carriage?
  1. How many pieces are there in a chess game?
  1. The symbol Hg stands for which chemical element?