Solar System Online Test

1. What is the name of the spacecraft that became the first human-made object to reach interstellar space in 2012?

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

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

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

5. Which comet is famous for its spectacular breakup into multiple fragments, which collided with Jupiter in 1994?

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

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

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

9. What is the name of the comet that made a close approach to Earth in 1997, becoming one of the brightest comets of the 20th century?

10. What is the biosphere?

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

12. What is the name of the moon of Saturn with a distinctive two-toned appearance, caused by impact cratering?

13. How many moons does Mars have?

14. Which moon of Uranus is known for its chaotic, fractured surface, possibly due to past impacts or internal heating?

15. What causes the extreme greenhouse effect on Venus?

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

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

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

19. Which space probe recently completed its mission by crashing into the surface of Comet 67P/Churyumov-Gerasimenko?

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

21. Which phenomenon is caused by tidal forces and results in the slowing of a celestial body's rotation?

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

23. How many major rings does Saturn's ring system consist of?

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

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

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

27. Which asteroid is the third-largest object in the Asteroid Belt?

28. What is the name of the largest known object in the asteroid belt between Mars and Jupiter?

29. 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?

30. What is the name of the robotic rover currently exploring the surface of Mars?