Space Science Quiz
Space science covers the Solar System, stars, galaxies and space exploration. The quiz tests planets, the Sun and Moon, telescopes, satellites and well-known missions.
What this quiz covers
- The Solar System
- Stars and galaxies
- Moon and Sun
- Space missions and satellites
Study tip: Order the planets by distance from the Sun and note one fact about each; it covers many questions.
Questions, answers and explanations
1. Which is the largest planet in our Solar System?
- Earth
- Saturn
- Jupiter
- Neptune
Answer: Jupiter
Jupiter is the largest planet in the Solar System.
2. Which planet is known as the Red Planet?
- Venus
- Mars
- Mercury
- Jupiter
Answer: Mars
Mars appears red because of iron oxide (rust) on its surface.
3. Which star is at the center of our Solar System?
- Polaris
- Sirius
- The Sun
- Betelgeuse
Answer: The Sun
The Sun is the star around which all planets in our Solar System revolve.
4. What is Earth's natural satellite?
- Mars
- Moon
- Venus
- Titan
Answer: Moon
The Moon is Earth's only natural satellite.
5. Which planet is famous for its beautiful rings?
- Jupiter
- Saturn
- Uranus
- Neptune
Answer: Saturn
Saturn is well known for its spectacular ring system.
6. Which planet is closest to the Sun?
- Venus
- Mercury
- Earth
- Mars
Answer: Mercury
Mercury is the closest planet to the Sun.
7. Which galaxy contains our Solar System?
- Andromeda Galaxy
- Whirlpool Galaxy
- Milky Way Galaxy
- Sombrero Galaxy
Answer: Milky Way Galaxy
Our Solar System is located in the Milky Way Galaxy.
8. Who was the first human to walk on the Moon?
- Yuri Gagarin
- Neil Armstrong
- Buzz Aldrin
- John Glenn
Answer: Neil Armstrong
Neil Armstrong became the first person to walk on the Moon on July 20, 1969.
9. What is the name of the first artificial satellite launched into space?
- Apollo 11
- Sputnik 1
- Voyager 1
- Hubble
Answer: Sputnik 1
Sputnik 1 was launched by the Soviet Union in 1957.
10. Which planet is known as the Morning Star or Evening Star?
- Mars
- Venus
- Mercury
- Jupiter
Answer: Venus
Venus is often called the Morning Star or Evening Star because it is very bright.
11. Which planet is called the Blue Planet?
- Mars
- Earth
- Neptune
- Uranus
Answer: Earth
Earth is called the Blue Planet because about 71% of its surface is covered with water.
12. What is the name of NASA's famous space telescope launched in 1990?
- James Webb Telescope
- Hubble Space Telescope
- Kepler Telescope
- Chandra Telescope
Answer: Hubble Space Telescope
The Hubble Space Telescope has provided some of the most detailed images of the universe.
13. Which planet has the greatest number of confirmed moons?
- Earth
- Mars
- Jupiter
- Mercury
Answer: Jupiter
Jupiter currently has the highest number of confirmed natural satellites.
14. What is the name of the force that keeps planets in orbit around the Sun?
- Magnetic Force
- Frictional Force
- Gravitational Force
- Electric Force
Answer: Gravitational Force
Gravity keeps planets moving in stable orbits around the Sun.
15. Which planet is famous for having a Great Red Spot?
- Saturn
- Mars
- Jupiter
- Neptune
Answer: Jupiter
The Great Red Spot is a giant storm that has existed on Jupiter for centuries.
16. Which planet is known as the Ice Giant due to its blue-green color and methane-rich atmosphere?
- Jupiter
- Saturn
- Uranus
- Mars
Answer: Uranus
Uranus is an ice giant, and methane in its atmosphere gives it a blue-green appearance.
17. Which space agency successfully landed the Perseverance rover on Mars in 2021?
- ESA
- NASA
- ISRO
- CNSA
Answer: NASA
NASA's Perseverance rover landed on Mars on February 18, 2021.
18. What is the name of the nearest star to Earth after the Sun?
- Sirius
- Proxima Centauri
- Betelgeuse
- Alpha Centauri A
Answer: Proxima Centauri
Proxima Centauri is the closest known star to the Solar System after the Sun.
19. Which dwarf planet lies in the Kuiper Belt and was once considered the ninth planet?
- Ceres
- Eris
- Pluto
- Haumea
Answer: Pluto
Pluto was reclassified as a dwarf planet by the IAU in 2006.
20. What is the name of the first human-made object to reach interstellar space?
- Apollo 11
- Voyager 1
- Sputnik 1
- Pioneer 10
Answer: Voyager 1
Voyager 1 became the first human-made spacecraft to enter interstellar space in 2012.