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Astronomy & Space Quiz

Astronomy & Space Quiz

20 questions · Unlimited attempts · Free online practice

Astronomy is one of humanity's oldest sciences, exploring the universe beyond Earth - its planets, stars, galaxies, black holes, and the cosmic events that shaped existence itself....

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All 20 questions in this Astronomy & Space quiz
  1. Which is the smallest planet in our solar system?

    • A. Mars
    • B. Pluto
    • C. Mercury
    • D. Venus
  2. Which planet has a moon named Triton?

    • A. Saturn
    • B. Jupiter
    • C. Uranus
    • D. Neptune
  3. What is the hottest planet in the Solar System?

    • A. Venus
    • B. Mars
    • C. Mercury
    • D. Jupiter
  4. What is the name of the telescoepee launched in 1990?

    • A. Hubble
    • B. Spitzer
    • C. Kepler
    • D. James Webb
  5. What is the term for a meteor that hits Earth's surface?

    • A. Asteroid
    • B. Comet
    • C. Meteorite
    • D. Meteoroid
  6. What is the sun's visible surface called?

    • A. Photosphere
    • B. Corona
    • C. Chromosphere
    • D. Core
  7. What is the movement of Earth around the Sun called?

    • A. Revolution
    • B. Orbiting
    • C. Rotation
    • D. Tidal lock
  8. Which is the brightest star in the night sky?

    • A. Polaris
    • B. Betelgeuse
    • C. Sirius
    • D. Rigel
  9. What is the 'Kuiepeer Belt'?

    • A. A planet ring
    • B. A star cluster
    • C. A region of icy objects
    • D. A galaxy arm
  10. Which planet is known as the Morning Star?

    • A. Mars
    • B. Jupiter
    • C. Saturn
    • D. Venus
  11. What is the most abundant gas in the universe?

    • A. Nitrogen
    • B. Hydrogen
    • C. Helium
    • D. Oxygen
  12. What is the closest star to Earth?

    • A. Sirius
    • B. Betelgeuse
    • C. Proxima Centauri
    • D. The Sun
  13. Which layer of the atmosphere is the 'garbage dump' for satellites?

    • A. Exosphere
    • B. Stratosphere
    • C. Troposphere
    • D. Mesosphere
  14. Who was the first epeerson to walk on the moon?

    • A. Yuri Gagarin
    • B. Neil Armstrong
    • C. Buzz Aldrin
    • D. Michael Collins
  15. Which planet is known as the Evening Star?

    • A. Venus
    • B. Mercury
    • C. Saturn
    • D. Mars
  16. What is an 'Eclipse'?

    • A. One celestial body blocking another
    • B. A solar flare
    • C. A planetary alignment
    • D. A star death
  17. What gas is the Sun mostly made of?

    • A. Oxygen
    • B. Hydrogen
    • C. Nitrogen
    • D. Helium
  18. Which planet is famous for its Great Red Spot?

    • A. Jupiter
    • B. Mars
    • C. Saturn
    • D. Neptune
  19. What is the Sun?

    • A. An asteroid
    • B. A star
    • C. A planet
    • D. A moon
  20. What is the name of the first human-made satellite?

    • A. Vostok 1
    • B. Explorer 1
    • C. Apollo 11
    • D. Sputnik 1