Solar System Online Test

1. Which spacecraft was the first to visit Mercury?

2. What is the rotational period of Earth?

3. Which elements in Earth's atmosphere are responsible for the green and red colors in auroras?

4. Which moon of Saturn exhibits extensive cryovolcanism, with geysers erupting from its south polar region?

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

6. What is the name of the phase of the Moon when it is fully illuminated as seen from Earth?

7. Which surface feature on Venus is a vast, elevated region similar to continents on Earth?

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

9. What is the name of the largest impact basin on Mars, covering a vast region of the planet's southern hemisphere?

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

11. What is unique about Uranus's rotation axis compared to other planets in the Solar System?

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

13. Which moon of Jupiter is thought to have a subsurface ocean beneath its icy crust, potentially harboring conditions suitable for life?

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

15. Which geological feature on Earth is the result of the collision between tectonic plates, leading to the formation of mountain ranges?

16. Which moon of Jupiter is the most heavily cratered body in the Solar System, indicating its ancient surface?

17. What was the approximate length of the tail of Comet Hale-Bopp during its peak brightness in 1997?

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. What is the name of the prominent storm observed on Neptune's atmosphere that disappeared after a few years?

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

21. What is the main composition of objects found in the Kuiper Belt?

22. What is the phenomenon called where Mercury exhibits phases similar to the Moon and Venus?

23. Which celestial body exhibits significant tidal heating, resulting in geologically active features such as cryovolcanoes?

24. What is the name of a meteoroid that survives its passage through Earth's atmosphere and strikes the ground?

25. What is the name of the largest moon of Neptune?

26. Which moon of Jupiter is the largest in the solar system?

27. What is the name of the spacecraft that discovered geysers erupting from beneath the icy surface of Saturn's moon, Enceladus?

28. How many rings does Uranus have?

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

30. Which comet is often referred to as "the Great Comet of 1910" due to its spectacular appearance and close approach to Earth?