Solar System Online Test

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

2. Which feature is the largest impact crater on Mercury?

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

5. Which space telescope is set to succeed the Hubble Space Telescope and is designed to observe the universe in the infrared spectrum?

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

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

8. 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)?

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

10. What is the largest moon of Pluto?

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

12. What is the region called where the solar wind slows down and merges with the interstellar medium?

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

14. What is the name of the region on Pluto characterized by vast plains of nitrogen ice?

15. What is the name of the large impact crater on the Moon's surface that contains the Sea of Tranquility, where Apollo 11 landed?

16. What is tidal locking?

17. Which moon of Saturn is known for its dense atmosphere, which is primarily composed of nitrogen and methane, and its hydrocarbon lakes and seas on its surface?

18. What percentage of Earth's atmosphere is composed of nitrogen?

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

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

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

22. What is gravitational interaction?

23. Which moon of Jupiter is known for its smooth, icy surface with long cracks and streaks caused by tidal forces?

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

25. Which space probe is currently studying the polar regions and atmosphere of Mars, searching for signs of past or present life?

26. Which moon of Saturn is thought to have subsurface oceans beneath its icy crust, similar to Europa and Enceladus?

27. Which spacecraft conducted the first soft landing on the far side of the Moon in 2019, deploying the Yutu-2 rover?

28. What is the name of the largest feature on Pluto's surface, which is a heart-shaped region?

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

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