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