Solar System Online Test

1. Which comet is known for its bright appearance and greenish coma due to the presence of cyanogen and diatomic carbon?

2. What is the name of the large, high-altitude vortex observed at Venus' south pole?

3. What geological feature on Mercury suggests it has contracted over time?

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

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

6. Which space probe carried a golden record containing sounds and images of Earth, intended as a message to potential extraterrestrial civilizations?

7. What is the approximate diameter of Uranus?

8. What is the name of a small rocky or metallic body in space that enters Earth's atmosphere and produces a streak of light?

9. What is the name of the hexagonal cloud pattern observed at Saturn's north pole?

10. What is the name of the process by which rocks are broken down into smaller fragments through physical, chemical, or biological means?

11. Which comet is the most famous and well-known, with a regular period of approximately 76 years?

12. What are auroras commonly known as when seen in the Northern Hemisphere?

13. Which space probe conducted flybys of Jupiter and Saturn before embarking on a trajectory to leave the Solar System in a different direction from Voyager 1?

14. Which region of the Sun is responsible for the acceleration of the solar wind?

15. Which moon of Saturn is known for its active geysers erupting from its south pole, indicating the presence of a subsurface ocean?

16. What is the name of the largest meteorite ever found on Earth?

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

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

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

20. What is the solar wind?

21. Which gas giant planet has the fastest winds in the Solar System, with wind speeds reaching up to 2,100 kilometers per hour (about 1,305 miles per hour)?

22. Which space probe was the first to visit Jupiter and later became the first human-made object to leave the Solar System?

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

24. What is the rotational period of Earth?

25. What is the most prominent feature of Neptune's atmosphere?

26. What geological feature on Earth is formed by the stretching and thinning of the crust, leading to the sinking of blocks of land between parallel faults?

27. What is the name of the region on Pluto characterized by dark, heavily cratered terrain?

28. What is the central solid core of a comet called?

29. Which comet is known for its exceptionally long tail and was visible to the naked eye for several months in 1997?

30. What is the average surface temperature of Pluto?