Astronomy Quiz

Astronomy quiz​ challenges your knowledge of stars, planets, and the cosmos. Test yourself on fascinating celestial facts and improve your understanding of the universe.

One-Liner Questions for the Astronomy Quiz​

1. What is the largest planet in our solar system?
2. Which planet is known as the Red Planet?
3. How long does it take for the Earth to complete one rotation on its axis?
4. What is the term for a star that suddenly increases in brightness?
5. What celestial body is the primary source of energy for Earth?
6. Which planet is known for its prominent rings?
7. How many planets are in the solar system?
8. What is the closest star to Earth?
9. What phase is the Moon in when it appears fully illuminated?
10. Which planet is often referred to as Earth’s “sister planet”?
11. What is the name of our galaxy?
12. What are the small, rocky objects that orbit the Sun called?
13. What force keeps planets in orbit around the Sun?
14. What is the name of the first man-made satellite sent into space?
15. What is the hottest planet in our solar system?
16. Which planet has the most moons?
17. What are the large, bright explosion events in stars called?
18. What term describes a group of stars forming a recognizable pattern?
19. What is the Sun primarily made of?
20. Which planet has the nickname “Gas Giant”?
21. Who was the first human to travel into space?
22. What do we call the path an object takes as it moves around another object in space?
23. What is the phenomenon of a star collapsing into a small, extremely dense object called?
24. How many Earths could fit inside the Sun?
25. What is the distance light travels in one year known as?
26. Which planet is closest to the Sun?
27. What is the study of celestial bodies and the universe known as?
28. What does NASA stand for?
29. What are the icy bodies that have a tail when passing close to the Sun called?
30. Who discovered that planets move in elliptical orbits?
31. What planet is famous for its tilted axis?
32. Which planet has the shortest day?
33. What is the name of the dwarf planet located in the Kuiper Belt?
34. What are shooting stars actually?
35. Which two planets rotate clockwise?
36. What celestial phenomenon is also called an “aurora”?
37. How many natural satellites does Earth have?
38. What does a telescope do?
39. Which planet has a surface temperature hot enough to melt lead?
40. What is a nebula?
41. What is the name of the first American to orbit Earth?
42. What does the Big Bang Theory describe?
43. What is the main gas found in Jupiter’s atmosphere?
44. What protects Earth from harmful solar wind and radiation?
45. Which planet has a Great Red Spot?
46. What is a constellation?
47. What is the second largest planet in the solar system?
48. Who first proposed that the Earth orbits the Sun?
49. Which celestial body orbits Earth?
50. What is the temperature of the Sun’s core approximately?

Answers to the Astronomy Quiz​ Questions

1. Jupiter
2. Mars
3. 24 hours
4. Nova
5. The Sun
6. Saturn
7. Eight
8. The Sun
9. Full Moon
10. Venus
11. The Milky Way
12. Asteroids
13. Gravity
14. Sputnik 1
15. Venus
16. Jupiter
17. Supernovae
18. Constellation
19. Hydrogen and Helium
20. Jupiter
21. Yuri Gagarin
22. Orbit
23. Black Hole formation
24. About 1.3 million Earths
25. Light-year
26. Mercury
27. Astronomy
28. National Aeronautics and Space Administration
29. Comets
30. Johannes Kepler
31. Uranus
32. Jupiter
33. Pluto
34. Meteors
35. Venus and Uranus
36. Northern/Southern Lights
37. One (the Moon)
38. Magnifies distant objects in space
39. Venus
40. A cloud of gas and dust in space
41. John Glenn
42. The origin and expansion of the universe
43. Hydrogen
44. Earth’s magnetic field
45. Jupiter
46. A pattern or grouping of stars
47. Saturn
48. Nicolaus Copernicus
49. The Moon
50. Approximately 15 million degrees Celsius

Key Takeaways from the Astronomy Quiz​

1. Jupiter is the largest planet in the solar system.
2. Venus, despite its beauty, is the hottest planet due to greenhouse gases.
3. Earth’s orbit is maintained by the Sun’s gravity.
4. The Milky Way is the galaxy that contains our solar system.
5. Light travels nearly 9.46 trillion kilometers in one year (1 light-year).
6. Astronomical events like supernovae create heavy elements in the universe.
7. Gravity keeps celestial bodies in motion around stars and planets.
8. Comets develop tails when near the Sun.
9. The Earth’s magnetic field shields it from solar radiation.
10. Space exploration has revealed much about our place in the universe.

Also Read: Astronomy Current Affairs