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Space & Planets Quiz

Blast off into the cosmos! Test your knowledge of planets, stars, galaxies, and the mysteries of outer space.

❓ 20 Questions
⏱ 30s Per Question
🆓 Free No Sign Up

About the Space & Planets Quiz

The Space & Planets Quiz is a free medium-level Science quiz featuring 20 multiple-choice questions. Blast off into the cosmos! Test your knowledge of planets, stars, galaxies, and the mysteries of outer space. Each question comes with a 30-second countdown timer and instant explanations after every answer so you can learn as you play. This quiz is completely free on GoKwiz — no account or sign up required.

Space & Planets Quiz — Practice Questions

1. How many planets are in our solar system?

  1. 10
  2. 7
  3. 8
  4. 9

2. Which is the largest planet in our solar system?

  1. Jupiter
  2. Neptune
  3. Saturn
  4. Uranus

3. What is the name of Earth's natural satellite?

  1. Europa
  2. Phobos
  3. The Moon
  4. Titan

4. Which planet is closest to the Sun?

  1. Earth
  2. Mars
  3. Mercury
  4. Venus

5. What is the name of the galaxy containing our solar system?

  1. Andromeda
  2. Magellanic Cloud
  3. Milky Way
  4. Triangulum

6. Which planet has the Great Red Spot?

  1. Jupiter
  2. Mars
  3. Neptune
  4. Saturn

7. Who was the first human to travel to space?

  1. Alan Shepard
  2. Buzz Aldrin
  3. Neil Armstrong
  4. Yuri Gagarin

8. What type of celestial object is the Sun?

  1. Neutron star
  2. Red giant
  3. White dwarf
  4. Yellow dwarf star

9. How long does Earth take to orbit the Sun?

  1. 24 hours
  2. 265 days
  3. 28 days
  4. 365.25 days

10. Which planet is known for its prominent ring system?

  1. Jupiter
  2. Neptune
  3. Saturn
  4. Uranus

11. What is a light-year?

  1. The age of the universe
  2. The brightness of a star
  3. The distance light travels in one year
  4. The time light takes to circle Earth

12. Which planet rotates on its side?

  1. Neptune
  2. Saturn
  3. Uranus
  4. Venus

13. What is the name of the first artificial satellite launched into space?

  1. Apollo 1
  2. Explorer 1
  3. Sputnik 1
  4. Vostok 1

14. Which planet is the hottest in the solar system?

  1. Earth
  2. Mars
  3. Mercury
  4. Venus

15. How many moons does Mars have?

  1. 0
  2. 1
  3. 2
  4. 4

16. What is the asteroid belt?

  1. A band of asteroids between Mars and Jupiter
  2. A region around Earth with satellites
  3. A ring around Saturn
  4. A zone of comets beyond Neptune

17. What is the closest star to Earth after the Sun?

  1. Alpha Centauri A
  2. Betelgeuse
  3. Proxima Centauri
  4. Sirius

18. What is a black hole?

  1. A collapsed comet
  2. A dark planet
  3. A region where gravity prevents even light from escaping
  4. A type of nebula

19. Which space telescope was launched in 1990 and has transformed astronomy?

  1. Hubble
  2. James Webb
  3. Kepler
  4. Spitzer

20. What is the Oort Cloud?

  1. A cloud of comets surrounding the solar system
  2. A galaxy near the Milky Way
  3. A nebula near Earth
  4. Jupiter's storm system

Frequently Asked Questions

How many questions are in the Space & Planets Quiz?

This quiz contains 20 questions.

Is this quiz free?

Yes, completely free with no sign up or account required. All quizzes on GoKwiz are free forever.

What category is this quiz?

This quiz is in the Science category. Browse all Science quizzes →

How difficult is this quiz?

This quiz is rated medium difficulty, with a 30-second timer per question.

Can I retake the Space & Planets Quiz?

Yes, as many times as you like. Questions and answer options are shuffled every time for a fresh experience. After finishing, you can also retry only the questions you got wrong.

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