Home» Online Test » Astronomy » Solar System Online Test 0% Sorry, time's up. To complete the online test, please restart it. Created by Vikash chaudhary This 'Solar System Online Test' covers questions across all the topics related to our Solar System. Get fresh, new questions in each attempt. Total Questions: 30 Time Allotted: 30 minutes Passing Score: 50% Randomization: Yes Certificate: Yes Do not refresh the page! 👍 All the best! 1 / 30 1. Which moon of Jupiter is known for its smooth, icy surface with long cracks and streaks caused by tidal forces? a) Io b) Europa c) Ganymede d) Callisto 2 / 30 2. Which space probe was launched to study Pluto and the Kuiper Belt objects beyond it? a) New Horizons b) Juno c) Curiosity d) Opportunity 3 / 30 3. Which moon of Jupiter is thought to have a subsurface ocean beneath its icy crust, potentially harboring conditions suitable for life? a) Io b) Europa c) Ganymede d) Callisto 4 / 30 4. 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? a) Charon b) Styx c) Nix d) Kerberos 5 / 30 5. Which space probe is currently studying Jupiter's atmosphere, magnetic field, and composition? a) New Horizons b) Juno c) Curiosity d) Opportunity 6 / 30 6. What was the last appearance of Halley's Comet before its most recent return in 1986? a) 1910 b) 1972 c) 1986 d) 1997 7 / 30 7. What geological feature on Mercury suggests it has contracted over time? a) Lava plains b) Scarps or cliffs c) Impact basins d) Volcanic vents 8 / 30 8. What is the layer of soil that contains organic matter, microorganisms, and plant roots, and is vital for supporting plant growth? a) Subsoil b) Bedrock c) Topsoil d) Regolith 9 / 30 9. Which elements in Earth's atmosphere are responsible for the green and red colors in auroras? a) Hydrogen and helium b) Carbon and nitrogen c) Oxygen and nitrogen d) Sulfur and chlorine 10 / 30 10. What is the phenomenon called when the solar wind compresses Earth's magnetosphere on the side facing the Sun? a) Magnetotail b) Bow Shock c) Magnetopause d) Solar Flare 11 / 30 11. What is the approximate length of one day on Venus (one complete rotation)? a) 24 hours b) 58.6 Earth days c) 243 Earth days d) 365 Earth days 12 / 30 12. Which space probe carried a golden record containing sounds and images of Earth, intended as a message to potential extraterrestrial civilizations? a) Voyager 1 b) Voyager 2 c) Pioneer 10 d) Pioneer 11 13 / 30 13. What geological feature on Earth is formed by the bending or buckling of rock layers under compressional stress, leading to the uplift of mountain ranges? a) Impact crater b) Rift valley c) Trench d) Fold mountain 14 / 30 14. What is the approximate diameter of Jupiter's Great Red Spot? a) 10,000 kilometers (6,200 miles) b) 20,000 kilometers (12,400 miles) c) 30,000 kilometers (18,600 miles) d) 40,000 kilometers (24,800 miles) 15 / 30 15. Which spacecraft conducted a flyby of Pluto and explored the Kuiper Belt object Arrokoth? a) Voyager 2 b) New Horizons c) Cassini d) Dawn 16 / 30 16. What is axial tilt in planetary astronomy? a) The distance between a planet and the Sun b) The angle between a planet's orbit and the plane of its equator c) The time it takes for a planet to complete one orbit around the Sun d) The angle between a planet's axis of rotation and the perpendicular to its orbital plane 17 / 30 17. What is the name of the largest impact crater on the Moon, located on the lunar near side and visible from Earth? a) Tycho b) Copernicus c) Mare Orientale d) South Pole–Aitken Basin 18 / 30 18. Which spacecraft was the first to successfully land humans on the Moon? a) Apollo 11 b) Apollo 13 c) Apollo 15 d) Apollo 17 19 / 30 19. Which comet is known for its bright appearance and greenish coma due to the presence of cyanogen and diatomic carbon? a) Halley's Comet b) Comet Hale-Bopp c) Comet Shoemaker-Levy 9 d) Comet Hyakutake 20 / 30 20. Which celestial body exhibits significant tidal forces from both Jupiter and Saturn, resulting in its elongated shape and active cryovolcanism? a) Io b) Europa c) Enceladus d) Titan 21 / 30 21. Which space probe conducted flybys of Jupiter and Saturn before embarking on a trajectory to leave the Solar System in a different direction from Voyager 1? a) Voyager 1 b) Voyager 2 c) Pioneer 10 d) Pioneer 11 22 / 30 22. What is the central solid core of a comet called? a) Nucleus b) Coma c) Tail d) Ionosphere 23 / 30 23. What is the name of the group of four large moons of Jupiter discovered by Galileo? a) Galilean Moons b) Jovian Moons c) Olympian Moons d) Titan Moons 24 / 30 24. Which asteroid is known for its large impact crater named Rheasilvia Basin? a) Vesta b) Ceres c) Pallas d) Hygiea 25 / 30 25. Which space probe was the first to visit Jupiter and later became the first human-made object to leave the Solar System? a) Voyager 1 b) Voyager 2 c) Pioneer 10 d) Pioneer 11 26 / 30 26. Which asteroid is the third-largest object in the Asteroid Belt? a) Vesta b) Ceres c) Pallas d) Hygiea 27 / 30 27. What is the most notable feature of Uranus's atmosphere? a) Giant red spot b) Hexagonal storm c) Massive hurricane d) Strong ammonia odor 28 / 30 28. What is the name of the meteorite that is believed to have brought organic molecules and water to Earth, potentially contributing to the origin of life? a) Allende b) Hoba c) Canyon Diablo d) Tunguska 29 / 30 29. What is the name of the moon of Haumea that orbits within its elongated shape? a) Hi'iaka b) Namaka c) Mo'o d) Pele 30 / 30 30. Which moon of Neptune is the largest and seventh-largest moon in the solar system? a) Nereid b) Proteus c) Triton d) Larissa Please provide accurate information so we can send your Achievement Certificate by mail. NameEmailPhone Number Your score isShare your achievement! LinkedIn Facebook 0% Restart Test Please provide your feedback. Thank you for your valuable feedback. Send feedback Buy Solar System MCQ PDF for Offline Study