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