Solar System Online Test

1. What is the primary component of Neptune's atmosphere?

2. What is the name of the moon of Makemake discovered in 2015?

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

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

5. Which planet in the Solar System is known for its massive dust storms that can engulf the entire planet for months?

6. Which moon of Uranus is known for its heavily cratered surface and bright, icy terrain?

7. Which moon of Uranus is known for its unusual, roughly spherical shape, with a diameter about one-third that of our Moon?

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

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

10. What is the name of the tallest mountain on Mars, often compared to Mount Everest on Earth?

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

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

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

14. 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?

15. Which spacecraft conducted a close-up study of Ceres, revealing bright spots and other intriguing features on its surface?

16. Which gas is present in Pluto's thin atmosphere?

17. What is the approximate diameter of Jupiter's Great Red Spot?

18. What is the Oort Cloud?

19. Which moon of Jupiter has the highest density among the Galilean moons, indicating a significant amount of rocky material in its composition?

20. What is the term for the layer of air surrounding the Earth that sustains life and protects it from harmful radiation?

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

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

23. What effect do tidal forces have on celestial bodies?

24. Which spacecraft provided close-up images of Jupiter and its moons in the 1990s?

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

26. 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?

27. What is the approximate length of one day on Venus (one complete rotation)?

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

29. Which mission is currently orbiting Mercury to study its surface and composition?

30. What is the term for a meteoroid that originates from a comet or asteroid and travels through space?