1. When was the telescope invented?
    • the 1950s
    • the early 17th century
    • roughly the same time the pyramids were built
    • 1492
  2. Which of these did Galileo NOT discover?
    • Four of Jupiter's Moons
    • Sunspots
    • Craters on the Moon
    • Pluto
  3. What is the main reason for putting telescopes in space?
    • It gets them above the atmosphere.
    • It's cheaper than building them on the ground.
    • It allows observations to be carried out at distances closer to the objects studied.
    • They last longer in space than on the ground.
  4. What is the largest single telescope on or in orbit around Earth?
    • The Hubble Space Telescope
    • The FAST radio telescope in China
    • The Large Synoptic Survey Telescope (LSST) in Chile
    • The Arecibo radio telescope in Puerto Rico