Solar System Online Test

1. How many major rings does Saturn's ring system consist of?

2. What is the name of the second-largest moon of Pluto?

3. What is the name of the moon of Pluto discovered in 2011 and named after the three-headed dog that guards the entrance to the underworld in Greek mythology?

4. Which spacecraft conducted a flyby of Pluto, providing the first close-up images and data of the dwarf planet?

5. Which space probe recently completed its mission by crashing into the surface of Comet 67P/Churyumov-Gerasimenko?

6. What was the last appearance of Halley's Comet before its most recent return in 1986?

7. Which asteroid is the largest object in the Asteroid Belt?

8. What is the name of the largest volcano on Venus?

9. What term refers to the bright streak of light produced when a meteoroid burns up in Earth's atmosphere?

10. What is the primary cause of auroras on Earth?

11. What is the name of the region beyond the orbit of Neptune where a vast collection of icy bodies, including Pluto, reside?

12. What is the primary component of Eris's surface?

13. Which dwarf planet was the first to be discovered beyond Pluto's orbit in the Kuiper Belt?

14. Which region of a comet's structure is primarily composed of water vapor, carbon dioxide, and other volatile substances?

15. Which spacecraft provided close-up images of Jupiter and its moons in the 1990s?

16. What geological feature on Mars is believed to be the largest volcano in the Solar System by volume and is named after the Roman god of war?

17. What is the name of the tallest mountain on Mars, often compared to Mount Everest on Earth?

18. According to Kepler's first law of planetary motion, what shape do planetary orbits trace around the Sun?

19. Which meteorite is composed mainly of iron and nickel and often exhibits a characteristic Widmanstätten pattern upon etching?

20. What is the Kuiper Belt?

21. What is the term for the movement of water from the Earth's surface into the atmosphere through evaporation from bodies of water and transpiration from plants?

22. What is the approximate diameter of Uranus?

23. What is the name of the largest volcano in the solar system, located on Mars?

24. What is the phenomenon called when the solar wind compresses Earth's magnetosphere on the side facing the Sun?

25. Which planet in the Solar System experiences the strongest winds, with wind speeds reaching up to 1,800 kilometers per hour (about 1,118 miles per hour)?

26. What is the rotational period of Earth?

27. What is axial tilt in planetary astronomy?

28. What is the name of the asteroid belt object that was visited by the Japanese spacecraft Hayabusa2?

29. Which space telescope is famous for its stunning images of distant galaxies, nebulae, and star clusters?

30. How does the atmospheric pressure at the surface of Venus compare to Earth's?