Solar System Online Test

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

2. What is the name of Kepler's second law of planetary motion?

3. 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?

4. What is the name of the dark, vortical storm system observed at Neptune's equator?

5. Which of the following is NOT a type of plate boundary?

6. What is the name of the second-largest moon of Pluto?

7. Which moon of Saturn is the largest and most notable, with a thick atmosphere and lakes of liquid hydrocarbons on its surface?

8. What is the Oort Cloud?

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

10. Which space probe provided the first close-up images of the asteroid Vesta and the dwarf planet Ceres in the asteroid belt?

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

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

13. Which spacecraft provided the first close-up images and data of Uranus and its moons?

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

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

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

17. Which spacecraft was the first to visit Mercury?

18. What is the name of the meteorite that produced the largest observed meteor airburst event in recorded history?

19. What is the name of the intense radiation belt surrounding Jupiter?

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

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

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

23. What is the name of the tallest mountain on the Moon, located near the southwestern edge of the Imbrium Basin?

24. Which type of comets are believed to originate from the Oort Cloud?

25. What is the name of the spacecraft that successfully landed the Huygens probe on Saturn's largest moon, Titan, in 2005?

26. 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?

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

28. 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?

29. What is the name of the persistent high-pressure region in Jupiter's atmosphere that is characterized by its swirling anticyclonic storm?

30. Which spacecraft conducted a flyby of Pluto and explored the Kuiper Belt object Arrokoth?