- 1. What are comets primarily made of?
A) Gas and plasma
B) Rock and metal
C) Diamonds and crystals
D) Ice and dust
- 2. What is the name of the spacecraft that landed on a comet for the first time in 2014?
A) Apollo
B) Galileo
C) Rosetta
D) Voyager
- 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) Edmond Halley
B) Johann Bode
C) Charles Messier
D) Giuseppe Piazzi
- 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 term for a group of asteroids that share similar orbits and characteristics?
A) Nebula
B) Star cluster
C) Galactic group
D) Asteroid family
- 7. What is the region in space where most comets originate from?
A) Scattered Disc
B) Asteroid Belt
C) Kuiper Belt
D) Oort Cloud
- 8. Which spacecraft visited the asteroid Eros and transmitted detailed images back to Earth?
A) NEAR Shoemaker
B) Hayabusa
C) OSIRIS-REx
D) Dawn
- 9. Which famous comet has a periodicity of approximately 76 years?
A) Halley's Comet
B) McNaught Comet
C) Hale-Bopp Comet
D) Lovejoy Comet
- 10. Which scientist first proposed the concept of the Oort Cloud in 1950?
A) Edmond Halley
B) Johannes Kepler
C) Carl Sagan
D) Jan Oort
- 11. 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
- 12. At what point in its orbit is a comet farthest from the Sun?
A) Aphelion
B) Zenith
C) Perihelion
D) Ecliptic
- 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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