- 1. What are comets primarily made of?
A) Diamonds and crystals B) Ice and dust C) Rock and metal D) Gas and plasma
- 2. What is the name of the spacecraft that landed on a comet for the first time in 2014?
A) Apollo B) Rosetta C) Voyager D) Galileo
- 3. What is the largest asteroid in the asteroid belt?
A) Pallas B) Hygiea C) Ceres D) Vesta
- 4. Who discovered the first asteroid, Ceres, in 1801?
A) Giuseppe Piazzi B) Charles Messier C) Johann Bode D) Edmond Halley
- 5. What is the process called when an asteroid or comet impacts a planet or moon?
A) Fusion B) Erosion C) Cratering D) Collapsing
- 6. What is the region in space where most comets originate from?
A) Asteroid Belt B) Scattered Disc C) Oort Cloud D) Kuiper Belt
- 7. Which famous comet has a periodicity of approximately 76 years?
A) McNaught Comet B) Hale-Bopp Comet C) Halley's Comet D) Lovejoy Comet
- 8. What is the term for a group of asteroids that share similar orbits and characteristics?
A) Nebula B) Asteroid family C) Star cluster D) Galactic group
- 9. At what point in its orbit is a comet farthest from the Sun?
A) Perihelion B) Zenith C) Aphelion D) Ecliptic
- 10. What is the term for asteroids that have orbits crossing Earth's path?
A) Interstellar Objects B) Near-Earth Objects (NEOs) C) Trans-Neptunian Objects D) Main Belt Asteroids
- 11. Which spacecraft visited the asteroid Eros and transmitted detailed images back to Earth?
A) Dawn B) OSIRIS-REx C) Hayabusa D) NEAR Shoemaker
- 12. Which scientist first proposed the concept of the Oort Cloud in 1950?
A) Jan Oort B) Carl Sagan C) Johannes Kepler D) Edmond Halley
- 13. What is the name of the spacecraft that rendezvoused with the comet Wild 2 and collected samples to return to Earth?
A) Cassini B) Voyager C) New Horizons D) Stardust
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