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