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 space telescope is designed to search for Earth-like planets orbiting other stars and is scheduled for launch in the 2020s? a) Hubble Space Telescope b) James Webb Space Telescope c) TESS (Transiting Exoplanet Survey Satellite) d) WFIRST (Wide Field Infrared Survey Telescope) 2 / 30 2. Which space probe is currently studying Jupiter's atmosphere, magnetic field, and composition? a) New Horizons b) Juno c) Curiosity d) Opportunity 3 / 30 3. Which Apollo mission was the first to include a lunar rover, allowing astronauts to explore a larger area of the Moon's surface? a) Apollo 11 b) Apollo 14 c) Apollo 15 d) Apollo 16 4 / 30 4. Which celestial body exhibits significant tidal heating, resulting in geologically active features such as cryovolcanoes? a) Earth b) Mars c) Io (moon of Jupiter) d) Triton (moon of Neptune) 5 / 30 5. Which moon of Saturn is believed to have a subsurface ocean beneath its icy crust? a) Enceladus b) Titan c) Mimas d) Dione 6 / 30 6. What is the effect of a strong solar wind on satellites in orbit around Earth? a) It has no effect b) It can damage their electronics and alter their orbits c) It can increase their speed d) It can make them invisible to ground stations 7 / 30 7. What causes the extreme greenhouse effect on Venus? a) Thick atmosphere with high levels of carbon dioxide b) Rapid rotation of the planet c) Presence of water vapor d) Distance from the Sun 8 / 30 8. What is the name of the large, high-altitude vortex observed at Venus' south pole? a) Saturn's Hexagon b) Venus' Vortex c) Venus' South Polar Vortex d) Venus' North Polar Vortex 9 / 30 9. What percentage of Earth's atmosphere is composed of nitrogen? a) Approximately 21% b) Approximately 50% c) Approximately 78% d) Approximately 90% 10 / 30 10. What characteristic makes Mercury unique among the terrestrial planets? a) Its large number of moons b) Its extremely tilted axis c) Its large iron core relative to its size d) Its thick atmosphere 11 / 30 11. Which moon of Jupiter is the largest moon in the Solar System, even larger than the planet Mercury? a) Io b) Europa c) Ganymede d) Callisto 12 / 30 12. 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 13 / 30 13. 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) 14 / 30 14. What is the name of the intense radiation belt surrounding Jupiter? a) Van Allen Belts b) Kuiper Belt c) Oort Cloud d) Magnetosphere 15 / 30 15. Which moon of Neptune is known for its retrograde orbit, meaning it orbits the planet in the opposite direction of Neptune's rotation? a) Triton b) Nereid c) Proteus d) Larissa 16 / 30 16. Which spacecraft provided the first close-up images and data of Neptune and its moons? a) Voyager 1 b) Voyager 2 c) Cassini d) New Horizons 17 / 30 17. Which effect of tidal forces is responsible for the gradual recession of the Moon from Earth and the lengthening of Earth's day? a) Tidal heating b) Tidal friction c) Tidal stretching d) Tidal locking 18 / 30 18. Which moon of Saturn is known for its complex geological features, including cryovolcanoes, and the famous "tiger stripes" at its south pole? a) Titan b) Enceladus c) Miranda d) Triton 19 / 30 19. Which phenomenon is caused by tidal forces and results in the slowing of a celestial body's rotation? a) Tidal heating b) Tidal friction c) Tidal stretching d) Tidal locking 20 / 30 20. 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 21 / 30 21. Which space probe became the first human-made object to reach interstellar space? a) Voyager 1 b) Voyager 2 c) Pioneer 10 d) Pioneer 11 22 / 30 22. 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? a) Halley's Comet b) Comet Hale-Bopp c) Comet Shoemaker-Levy 9 d) Comet Hyakutake 23 / 30 23. How many major rings does Saturn's ring system consist of? a) 2 b) 5 c) 7 d) 9 24 / 30 24. Which space probe is currently studying the polar regions and atmosphere of Mars, searching for signs of past or present life? a) New Horizons b) Juno c) Curiosity d) Perseverance 25 / 30 25. What causes tidal forces? a) Gravitational pull from nearby stars b) Gravitational pull from the Moon and Sun c) Electromagnetic forces between celestial bodies d) Nuclear reactions within celestial bodies 26 / 30 26. Which mission provided the first detailed radar maps of Venus's surface? a) Mariner 2 b) Magellan c) Pioneer Venus d) Venera 7 27 / 30 27. What is the name of the moon of Makemake discovered in 2015? a) S/2015 (136472) 1 b) Weywot c) MK2 d) Hiiaka 28 / 30 28. Which Mars rover was launched in 2011 and has been exploring Gale Crater since its landing in 2012? a) New Horizons b) Juno c) Curiosity d) Opportunity 29 / 30 29. Which of the following is NOT a layer of the Earth's interior? a) Crust b) Mantle c) Core d) Hydrosphere 30 / 30 30. 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 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