27 Astronomy Trivia Questions (Ranked from Easiest to Hardest)

Updated Date:
February 11, 2024
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Astronomy is a fascinating subject that explores the universe and our place within it. From the earliest observations of the stars and planets to modern-day discoveries of new galaxies and black holes, astronomy has always been a source of wonder and curiosity. Trivia questions about astronomy can provide a fun and engaging way to test your knowledge and deepen your appreciation for this vast and fascinating subject.

Whether you're a seasoned astronomer or just starting to explore the field, astronomy trivia questions offer a glimpse into the wonders of the universe. From our own solar system to distant stars and galaxies, these questions can challenge you on the properties and movements of celestial bodies, the history of astronomical discoveries, and the theories and technologies used to study the universe.

Ultimately, astronomy trivia questions are a fun and educational way to engage with this fascinating subject. Whether you're a student, an amateur astronomer, or simply someone with a curiosity about the universe, these questions can help you broaden your knowledge, discover new wonders, and deepen your appreciation for the mysteries of the cosmos. So why not put your knowledge to the test and see how well you know your astronomy trivia!

27 Astronomy Trivia Questions Ranked From Easiest to Hardest (Updated for 2024)

  1. Sharing its name with a metal that is liquid at room temperature, what is the name of the planet in the Solar System that is closest to the Sun?

    Answer: Mercury

  2. What is the name of a planet in the Solar System, the Roman god of war, and a well-known chocolate bar which is named after the chocolate company’s owner?

    Answer: Mars

  3. Astronomical distances are often described in what timely measurement, with one unit roughly equivalent to 5.88 trillion miles?

    Answer: Light Year

  4. What profession anagrams, quite appropriately, to the term "moon starer?"

    Answer: Astronomer

  5. What brand of chocolate bar, made of nougat, topped with caramel, and covered with milk chocolate, shares its name with the galaxy which contains our Solar System?

    Answer: Milky Way

  6. With an equatorial radius of over 44,000 miles, what planet is the largest in Earth's solar system? It has a mass of only one-thousandth of the Sun, but more than twice as large as all other planets in the solar system combined.

    Answer: Jupiter

  7. Kind of like a way cheaper Ritchey–Chrétien, a Vixen Sixth-Order Aspheric Cassegrain telescope will help the astronomy nerd in your life stare at Cassiopeia, Capricorn, or any of the other 86 of what “C” sky groupings?

    Answer: Constellation

  8. Titan is one of the few moons in the solar system known to have an atmosphere of any substance. Around which second-largest planet does Titan revolve?

    Answer: Saturn

  9. In 1997, David Wolf became the first American to vote from where? A Texas state law enabled him to do so.

    Answer: Space

  10. Which planet in our solar system is the fastest, moving at approximately 29 miles per second?

    Answer: Mercury

  11. What “E” astronomical event, during which the moon blocks Earth’s sunlight, can also affect the flight patterns of certain birds?

    Answer: Eclipse

  12. Delawarean astronomer Annie Jump Cannon helped develop the Harvard System, which classifies what objects according to colors like blue, white, and red?

    Answer: Stars

  13. Named for a professor of mathematics and astronomy at the Ohio Wesleyan University, what structure in Delaware, OH was completed in 1931 and included the 3rd largest mirror in the world?

    Answer: Perkins Observatory

  14. Although it's too faint to be seen by the unaided eye, what star is, at 4.2 million light years away, the closest star to us other than the Sun?

    Answer: Proxima Centauri

  15. About 2.8 billion miles from the Sun and known for its powerful wind storms, which planet is the only one you can’t see from Earth with the naked eye?

    Answer: Neptune

  16. Since we only have one, Earth ranks pretty low in the moon category (though that’s one more than Mercury or Venus!) With 63 confirmed and another 20 provisional, which planet in our solar system has the most moons?

    Answer: Saturn

  17. Earth is the densest planet in the solar system. Which of the giant planets of the solar system is its least dense planet?

    Answer: Saturn

  18. Take the number of rocky planets in our solar system plus the number of teaspoons in a tablespoon. What's the sum?

    Answer: Seven

  19. What Danish astronomer collected the scientific data that his assistant Johannes Kepler later used to develop the three laws of planetary motion?

    Answer: Tycho Brahe

  20. If you were to create a list with 88 entries in alphabetical order that started with Andromeda and ended with Vulpecula, what would you be listing?

    Answer: Constellations

  21. A sunset on Mars takes on which color because of how sunlight passes through the fine dust in the atmosphere?

    Answer: Blue

  22. The third-oldest astronomical clock in the world was first installed in 1410 in what city in the heart of Europe?

    Answer: Prague

  23. The Asteroid Belt famously separates the inner rocky planets from the gas giants that begin with Jupiter. What is the name of the astronomical entity beyond Neptune's orbit that also houses three officially recognized dwarf planets: Pluto, Haumea, and Makemake?

    Answer: Kuiper Belt

  24. What small, dark stars, also known as "failed stars," are those not massive enough to sustain nuclear fusion of hydrogen into helium?

    Answer: Brown Dwarfs

  25. On July 5, 2022, Earth was the farthest from the Sun that it would get for the whole year: 94,510,886 miles, to be exact. What astronomy term is used to describe this phenomenon?

    Answer: Aphelion

  26. Which counteroffensive operation (codenamed after a planet in our solar system) did the then-USSR carry out in the midst of the Battle of Stalingrad—a strategic move that essentially turned the tide of the war in their favor?

    Answer: Uranus

  27. Discovered in 2005, which dwarf planet in our solar system is about the size as Pluto, has a day about as long as Earth’s (just over 25 hours), and one small moon?

    Answer: Eris

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