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