Solar System Online Test

1. 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?

2. Which of the following is NOT a greenhouse gas?

3. Which spacecraft provided the first close-up images and data of Uranus and its moons?

4. Which space probe was launched to study Pluto and the Kuiper Belt objects beyond it?

5. What is the name of the dwarf planet located in the Kuiper Belt, known for its elongated shape and rapid rotation?

6. What is the name of the hexagonal cloud pattern observed at Saturn's north pole?

7. What is the name of the massive, swirling storm system observed at Saturn's south pole?

8. What is the name of the spacecraft that discovered geysers erupting from beneath the icy surface of Saturn's moon, Enceladus?

9. Which dwarf planet is notable for its elongated shape and rapid rotation?

10. 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?

11. 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?

12. Which ground-based telescope is located in Hawaii and is one of the world's premier observatories for optical and infrared astronomy?

13. Which space probe provided the first close-up images of the asteroid Vesta and the dwarf planet Ceres in the asteroid belt?

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

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

16. Which gas giant planet has the fastest winds in the Solar System, with wind speeds reaching up to 2,100 kilometers per hour (about 1,305 miles per hour)?

17. What is the potential significance of recurring slope lineae (RSL) observed on Mars?

18. What characteristic makes Mercury unique among the terrestrial planets?

19. Which space telescope is famous for its stunning images of distant galaxies, nebulae, and star clusters?

20. What is the name of the region in the Solar System where long-period comets originate, extending to the outermost reaches of the Sun's gravitational influence?

21. Which ground-based telescope is the world's largest single-aperture optical telescope and is located in the Canary Islands, Spain?

22. What is the average surface temperature on Venus?

23. What causes the extreme greenhouse effect on Venus?

24. What is the primary composition of objects found in the Oort Cloud?

25. Which layer of the Earth's atmosphere contains most of the weather phenomena?

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

27. Which dwarf planet is known for its reddish surface color, likely due to the presence of organic compounds?

28. According to Kepler's first law of planetary motion, what shape do planetary orbits trace around the Sun?

29. What is the name of Kepler's second law of planetary motion?

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