You are here: 10 Questions - Celestial Bodies

Celestial Bodies Quiz

Are you a budding astronomer?

  1. Clyde Tombaugh discovered which planet in 1930? It was reclassified as a dwarf planet in 2006.
  2. The Galilean moons are the four largest moons of which planet?
  3. Which planet was discovered by astronomer William Herschel in 1781 from his garden in Bath with a telescope he made himself?
  4. The asteroid belt lies between the orbits of which two planets?

  5. Describing its appearance from Earth, what name was given to the galaxy that includes the Solar System?
  6. Crux, a constellation centred on four bright stars, is commonly known as what?
  7. A well known theory is that dinosaurs became extinct by an asteroid colliding with Earth 66 million years ago off the coast of which modern day country?
  8. Visible to the naked eye for a record 18 months, which comet was dubbed the great comet of 1997?
  9. What is the name of the largest object in the asteroid belt?
  10. What doughnut-shaped ring of icy objects around the Sun in the outer Solar System, is similar to the asteroid belt but 20 times larger?
  11. What name, derived from the Latin for mist or fog, is an enormous cloud of dust and gas occupying the space between stars?
  12. Discovered in 2005, what is the second-largest known dwarf planet in the Solar System and also the largest object never to have been visited by a spacecraft?
  13. Author Mark Twain was born shortly after the appearance of what celestial body and died about a month before it passed near Earth again?
  14. Name the closest known galaxy?
  15. Also known as the "Dog Star", what is the brightest star in the sky named?
  16. The first confirmed object from another star to visit our solar system was a cigar-shaped object in 2017. It was given the name 'Oumuamua', which means "scout" in which language?
  17. The Pleiades is the nearest star cluster to earth. What is it also known as?
  18. What is the hottest planet in our solar system?


  1. Pluto
  2. Jupiter (the Galilean moons are: Io, Europa, Ganymede, and Callisto)
  3. Uranus
  4. Mars and Jupiter
  5. The Milky Way
  6. The Southern Cross
  7. Mexico
  8. Haleā€“Bopp
  9. Ceres
  10. The Kuiper belt
  11. Nebula
  12. Eris
  13. Halley's Comet (Halley's Comet returns to Earth about every 75 years.)
  14. Canis Major Dwarf Galaxy (25,000 light years from the Sun.) (The Andromeda galaxy is the nearest spiral galaxy, about 2.6 million light years away.)
  15. Sirius, or more officially, Alpha Canis Majoris
  16. Hawaiian (it was discovered by Robert Weryk at the Haleakala Observatory, Hawaii.)
  17. The Seven Sisters
  18. Venus (Mercury is closer to the Sun but the thick atmosphere of Venus that traps the heat makes it hotter!)