Solar System Online Test

1. Which moon of Uranus is known for its heavily cratered surface and bright, icy terrain?

2. Which Mars rover recently completed its mission, having operated on the Martian surface for over 15 years?

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

4. What characteristic makes Mercury unique among the terrestrial planets?

5. What is the term for the phase of the Moon when only a small portion of its surface is illuminated, appearing as a thin crescent?

6. What is the primary component of Neptune's atmosphere?

7. What is the name of the spacecraft launched by the European Space Agency (ESA) and the Japan Aerospace Exploration Agency (JAXA) to study Mercury?

8. Which dwarf planet is known for its reddish surface color, likely due to the presence of organic compounds?

9. What is the name of the spacecraft that orbited Saturn and its moons, providing detailed observations and data?

10. Which asteroid is the target of the Hayabusa2 mission, which aimed to return a sample to Earth?

11. Which ground-based telescope is located in Chile and is designed to search for exoplanets using the transit method?

12. What is the primary component of Jupiter's atmosphere?

13. Which space probe was the first to fly by Jupiter, Saturn, Uranus, and Neptune, providing detailed data on these gas giants and their moons?

14. What is the name of the largest moon of Saturn?

15. Which space probe successfully explored the dwarf planet Ceres in the asteroid belt, providing valuable data on its surface composition and features?

16. Which ground-based telescope is located in Hawaii and is one of the world's premier observatories for optical and infrared astronomy?

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

18. What is the name of the first successful Mars rover mission, launched by NASA in 1996, which provided valuable data on the Martian surface and atmosphere?

19. Which Apollo mission was the last to land humans on the Moon's surface?

20. What is the state of Mercury's atmosphere?

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

22. What is the process by which water vapor changes into liquid water?

23. Which asteroid is known for its large impact crater named Rheasilvia Basin?

24. What is the Oort Cloud?

25. Which comet made a close approach to Earth in 1996, becoming widely visible to the naked eye?

26. What is the primary composition of objects found in the Oort Cloud?

27. What is the name of the massive, swirling storm system observed at Neptune's equator?

28. Which space probe conducted a flyby of Pluto in 2015, providing the first close-up images of the dwarf planet?

29. Which spacecraft was the first to visit Mercury?

30. Which moon of Uranus is known for its unusual, roughly spherical shape, with a diameter about one-third that of our Moon?