Solar System Online Test

1. What are substorms in the context of Earth's magnetosphere?

2. 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?

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. How does the atmospheric pressure at the surface of Venus compare to Earth's?

5. What is the name of the massive, swirling storm system observed at Neptune's equator?

6. What is the most notable feature of Uranus's atmosphere?

7. Which moon of Uranus is unique for its extreme axial tilt, causing it to essentially orbit the planet on its side?

8. What is the name of the moon of Haumea that orbits within its elongated shape?

9. What is the primary greenhouse gas in Earth's atmosphere?

10. What is the name of the asteroid belt object that was visited by the Dawn spacecraft in 2011?

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

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

13. What is the layer of soil that contains organic matter, microorganisms, and plant roots, and is vital for supporting plant growth?

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

15. Which moon of Saturn is believed to have a subsurface ocean beneath its icy crust?

16. Which region of a comet's structure is primarily composed of water vapor, carbon dioxide, and other volatile substances?

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

18. Which comet is known for its exceptionally long tail and was visible to the naked eye for several months in 1997?

19. What is the name of the group of four large moons of Jupiter discovered by Galileo?

20. What is the name of the largest moon of Jupiter?

21. Which mission provided the first detailed radar maps of Venus's surface?

22. Which layer of the Earth's atmosphere is closest to the planet's surface?

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

24. 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?

25. What is the name of the largest moon of Neptune?

26. How does solar wind contribute to the creation of auroras on Earth?

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

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

29. Which space probe became the first human-made object to reach interstellar space?

30. Which asteroid is the target of the NASA OSIRIS-REx mission, which aims to return a sample to Earth?