1. One million Earths can fit inside the Sun.
  2. The word astronaut comes from the Greek word “Astron” which means star and “nautes” which means sailor. The Russian cosmonaut has a similar meaning from ‘kosmos’ meaning universe and again “nautes” sailor.
  3. The furthest manmade object is Voyager 1. It has messages for aliens on-board.
  4. All of space is completely silent.
  5. If two pieces of the same type of metal touch in space, they will bond and be permanently stuck together.
  6. If you fell into a black hole, you would stretch like spaghetti.
  7. A tablespoon of a neutron star would weigh about ten billion tons.
  8. Halley predicted that a comet he had discovered would return in 1758, 16 years after his death, and it really did. It was the first time a comet’s arrival had been predicted, and the comet was named after him as Halley’s Comet.
  9. The most distant galaxies (quasars) have red shifts so big that they must be moving away from us at speeds approaching the speed of light.