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