Solar System Online Test

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

2. What term refers to the fuzzy, glowing region surrounding the nucleus of a comet?

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

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

5. Which instrument on spacecraft is used to measure the impact of the solar wind on Earth's magnetosphere?

6. Which planet in the Solar System has a thick atmosphere composed mainly of carbon dioxide, with surface pressures about 92 times that of Earth?

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

8. Which moon of Jupiter is known for its heavily cratered surface, indicating its ancient geological history and lack of significant geological activity?

9. Which space probe was the first to fly by Jupiter and Saturn and provided close-up images of their moons, including Io's volcanic activity?

10. What is the name of the meteorite that is believed to have brought organic molecules and water to Earth, potentially contributing to the origin of life?

11. What geological feature on Earth is formed by the bending or buckling of rock layers under compressional stress, leading to the uplift of mountain ranges?

12. Which moon of Jupiter is known for its highly active surface geology, with extensive cryovolcanism and icy geysers?

13. Which meteorite impact created the Barringer Crater in Arizona, USA?

14. What is the name of the moon of Neptune with a highly eccentric orbit and retrograde motion?

15. What is the name of the bright, elongated stream of gas and dust extending from the coma of a comet?

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

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

18. Which comet fragmented and collided with Jupiter in 1994, producing a series of impact events observed by astronomers?

19. Which moon of Neptune is the largest and seventh-largest moon in the solar system?

20. What is the name of the process by which rocks are transformed into new types of rocks through heat and pressure?

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

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

23. What is the name of the prominent gap in Saturn's rings, caused by the gravitational influence of the moon Mimas?

24. What is the name of the moon of Jupiter with a subsurface ocean that may harbor conditions suitable for life?

25. How many moons does Mars have?

26. Which moon of Jupiter has a thin atmosphere composed mostly of carbon dioxide, with surface pressures less than one-thousandth of Earth's?

27. Which type of tail of a comet is composed of ionized gas and is pushed away from the Sun by the solar wind?

28. What is the name of the valley network system on Mars that suggests past water erosion?

29. Which biome is characterized by long, cold winters and short, cool summers, with coniferous trees as the dominant vegetation?

30. What is the Earth's mantle primarily composed of?