Welcome, fellow space enthusiasts! Are you ready to test your knowledge and explore the vast expanse of the cosmos from the comfort of your home? We’ve compiled 100 fascinating questions about the universe we inhabit. This Space Trivia collection covers everything from planets in our solar system to the farthest galaxies and black holes. Whether you’re an amateur astronomer, a student, or simply someone who loves to gaze at the stars, you’re sure to find these questions challenging and fun. How much do you really know about the mysteries of space? Let’s find out together! Let the journey begin.
If you like trivia like this, check out:
1. What is the largest planet in our solar system? Reveal Answer Jupiter 2. Which planet is known as the ‘Red Planet’? Reveal Answer Mars 3. How long does it take for the light from the Sun to reach the Earth? Reveal Answer About 8 minutes and 20 seconds 4. Which planet has the most moons? Reveal Answer Jupiter 5. What is the largest moon in the Solar System? Reveal Answer Ganymede 6. What was the first animal to orbit Earth? Reveal Answer A dog named Laika 7. What is the speed of light? Reveal Answer Approximately 299,792 kilometers per second 8. What are comets made of? Reveal Answer Ice, dust, and rocky material 9. What is a supernova? Reveal Answer A stellar explosion that briefly outshines an entire galaxy 10. What is the hottest planet in our solar system? Reveal Answer Venus 11. What is the name of the largest volcano in the solar system? Reveal Answer Olympus Mons on Mars 12. What is the name of the first man-made object to leave the solar system? Reveal Answer Voyager 1 13. What is the name of the most prominent ring of Saturn? Reveal Answer The B ring 14. What is the primary component of the Sun? Reveal Answer Hydrogen 15. What type of galaxy is the Milky Way? Reveal Answer Spiral galaxy 16. What is the name of the nearest major galaxy to the Milky Way? Reveal Answer Andromeda 17. What is the distance between the Earth and the Moon? Reveal Answer 238,855 miles (384,400 km) 18. What is the age of the universe? Reveal Answer Around 13.8 billion years 19. What type of planet is Neptune? Reveal Answer A gas giant 20. What is the largest dwarf planet in our solar system? Reveal Answer Pluto 21. What is a pulsar? Reveal Answer A highly magnetized, rotating neutron star that emits beams of electromagnetic radiation 22. What causes a solar eclipse? Reveal Answer The Moon passing between the Earth and the Sun 23. What was the name of the first human to walk on the moon? Reveal Answer Neil Armstrong 24. What is the name of the galaxy that is on a collision course with the Milky Way? Reveal Answer Andromeda Galaxy 25. Which planet has the shortest day of all the planets? Reveal Answer Jupiter 26. How many stars does the Milky Way contain? Reveal Answer Estimated between 100-400 billion stars 27. What is the diameter of the Earth? Reveal Answer Approximately 7,917.5 miles (12,742 km) 28. What was the first spacecraft to visit Mars? Reveal Answer Mariner 4 29. What is a white dwarf? Reveal Answer A small very dense star that is typically the size of a planet 30. What is a black hole? Reveal Answer A region of space having a gravitational field so intense that no matter or radiation can escape 31. What was the first planet discovered using a telescope? Reveal Answer Uranus 32. What are meteoroids? Reveal Answer Small rocky or metallic bodies in outer space 33. What are asteroids? Reveal Answer Rocky remnants left over from the early formation of our solar system 34. Which planet rotates on its side? Reveal Answer Uranus 35. Which planet has a year that lasts 88 Earth days? Reveal Answer Mercury 36. What is the space probe ‘New Horizons’ famous for? Reveal Answer It performed a flyby of Pluto 37. Which planet has the largest ocean in the solar system? Reveal Answer Earth 38. What is the space between galaxies called? Reveal Answer Intergalactic space 39. What is the Oort Cloud? Reveal Answer A theoretical cloud of predominantly icy planetesimals believed to surround the Sun 40. What is the speed of the Earth’s rotation? Reveal Answer Approximately 1,000 miles per hour 41. Which planet has the strongest magnetic field in the solar system? Reveal Answer Jupiter 42. What is the name of the second man who walked on the moon? Reveal Answer Buzz Aldrin 43. Which planet has the most circular orbit? Reveal Answer Venus 44. What is the Kuiper Belt? Reveal Answer A region of the solar system beyond the orbit of Neptune, believed to contain many comets, asteroids, and other small bodies made largely of ice 45. What is the estimated number of galaxies in the universe? Reveal Answer Two trillion galaxies 46. Which planet has the Great Red Spot? Reveal Answer Jupiter 47. Which planet is known for its rings? Reveal Answer Saturn 48. Which planet is the coldest in the solar system? Reveal Answer Neptune 49. What is the largest type of star in the universe? Reveal Answer A red supergiant star 50. What is the name of the first woman in space? Reveal Answer Valentina Tereshkova 51. What is the name of the NASA Mars rover that landed in 2021? Reveal Answer Perseverance 52. What is the average temperature on Mars? Reveal Answer -80 degrees Fahrenheit (-62 degrees Celsius) 53. Which planet has the biggest storm known in the solar system? Reveal Answer Jupiter 54. Which planet has the most complex atmospheric weather system? Reveal Answer Saturn 55. What is the densest planet in the solar system? Reveal Answer Earth 56. What is the name of the biggest star in the universe? Reveal Answer UY Scuti 57. Which is the brightest planet in the night’s sky? Reveal Answer Venus 58. What is the distance of one astronomical unit (AU)? Reveal Answer The average distance from the Sun to the Earth, about 93 million miles 59. What is the closest star to Earth? Reveal Answer Proxima Centauri 60. What is the term for a moon that orbits a planet? Reveal Answer A satellite 61. Which planet has the fastest winds in the solar system? Reveal Answer Neptune 62. What is the shape of the Milky Way galaxy? Reveal Answer Barred spiral 63. What is the smallest planet in the solar system? Reveal Answer Mercury 64. What is a light year? Reveal Answer The distance that light travels in one year, approximately 5.88 trillion miles 65. What is the name of the galaxy that contains our solar system? Reveal Answer The Milky Way 66. What is the smallest star in the universe? Reveal Answer OGLE-TR-122b 67. What is the dark matter? Reveal Answer An unidentified type of matter comprising approximately 85% of the matter in the universe 68. What is a cosmic year? Reveal Answer The time the Sun takes to orbit around the center of the Milky Way, about 225-250 million terrestrial years 69. Which is the largest moon of Saturn? Reveal Answer Titan 70. What is the difference between an asteroid and a comet? Reveal Answer Asteroids are made up of metal and rocky material, while comets are made up of ice, dust, and rocky material 71. What is the heliosphere? Reveal Answer The region of space dominated by the Sun, extending far beyond the orbit of Pluto 72. What is the name of the boundary at the edge of the heliosphere? Reveal Answer The heliopause 73. What is the biggest black hole known as of now? Reveal Answer TON 618 74. What is the name of the space telescope launched by NASA in 1990? Reveal Answer The Hubble Space Telescope 75. What causes a lunar eclipse? Reveal Answer The Earth passing between the Moon and the Sun 76. What is a habitable zone in astronomy? Reveal Answer The area around a star where it is not too hot or too cold for liquid water to exist on the surface of surrounding planets 77. What is the name of the first American to orbit Earth? Reveal Answer John Glenn 78. What is the Cassini Division? Reveal Answer The region between the A Ring and B Ring of Saturn 79. What is a Quasar? Reveal Answer An extremely luminous active galactic nucleus, in which a supermassive black hole with mass ranging from millions to billions of times the mass of the Sun is surrounded by a gaseous accretion disk 80. What is the weight of the Earth? Reveal Answer Approximately 5.972 × 10^24 kg 81. What is the oldest known planet in the universe? Reveal Answer PSR B1620-26 b, also known as ‘Methuselah’ 82. What is the tilt of Earth’s axis? Reveal Answer Approximately 23.5 degrees 83. What is the brightest star in the night sky? Reveal Answer Sirius 84. What is the name of the rover that discovered evidence of water on Mars in 2013? Reveal Answer Curiosity 85. What is the largest object in the asteroid belt? Reveal Answer Ceres 86. What is the Crab Nebula? Reveal Answer A supernova remnant in the constellation of Taurus 87. What is the name of the boundary that separates the solar system from interstellar space? Reveal Answer The heliopause 88. What is the name of the first successful weather satellite? Reveal Answer TIROS-1 89. What is a solar flare? Reveal Answer A sudden flash of increased brightness on the Sun, usually observed near its surface 90. What is a neutron star? Reveal Answer The collapsed core of a giant star which before collapse had a total mass of between 10 and 29 solar masses 91. What is the biggest known structure in the universe? Reveal Answer The Hercules-Corona Borealis Great Wall 92. What is the name of the theory that explains the creation of the universe? Reveal Answer The Big Bang Theory 93. What is the most common type of star found in the Milky Way? Reveal Answer Red dwarf stars 94. What is the name of the dwarf planet located beyond Pluto? Reveal Answer Eris 95. What is the name of the probe that visited Pluto in 2015? Reveal Answer New Horizons 96. What is the most abundant element in the universe? Reveal Answer Hydrogen 97. What is a protostar? Reveal Answer A very young star that is still gathering mass from its parent molecular cloud 98. What are the Van Allen radiation belts? Reveal Answer Zones of energetic charged particles that is held in place around a magnetized planet, such as Earth 99. What is a solar prominence? Reveal Answer A large, bright, gaseous feature extending outward from the Sun’s surface, often in a loop shape 100. What is the name of the mission that landed humans on the moon? Reveal Answer Apollo 11 Sharing is Caring:
