- 1. What are comets primarily made of?
A) Gas and plasma
B) Diamonds and crystals
C) Rock and metal
D) Ice and dust
- 2. What is the name of the spacecraft that landed on a comet for the first time in 2014?
A) Rosetta
B) Galileo
C) Voyager
D) Apollo
- 3. What is the largest asteroid in the asteroid belt?
A) Pallas
B) Ceres
C) Hygiea
D) Vesta
- 4. Who discovered the first asteroid, Ceres, in 1801?
A) Charles Messier
B) Johann Bode
C) Edmond Halley
D) Giuseppe Piazzi
- 5. What is the process called when an asteroid or comet impacts a planet or moon?
A) Cratering
B) Erosion
C) Collapsing
D) Fusion
- 6. What is the region in space where most comets originate from?
A) Kuiper Belt
B) Scattered Disc
C) Asteroid Belt
D) Oort Cloud
- 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) Asteroid family
B) Nebula
C) Star cluster
D) Galactic group
- 9. At what point in its orbit is a comet farthest from the Sun?
A) Aphelion
B) Ecliptic
C) Zenith
D) Perihelion
- 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) NEAR Shoemaker
B) Dawn
C) Hayabusa
D) OSIRIS-REx
- 12. Which scientist first proposed the concept of the Oort Cloud in 1950?
A) Edmond Halley
B) Carl Sagan
C) Jan Oort
D) Johannes Kepler
- 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) Stardust
C) New Horizons
D) Voyager
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