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