Test your knowledge about space! 0% 815 Space Quiz Test your knowledge about space!When you completed the quiz, scroll down to see the correct answers. 1 / 8 A planet is a celestial body that obeys the following criteria: It must be in orbit around the Sun, it must have a (nearly) round shape and it must have cleared the neighborhood around its orbit.Question: How many planets are in our solar system? 7 8 9 10 2 / 8 A day is the time it takes for a planet to rotate once around its own axis. A year is the time it takes for a planet to orbit the sun.Question: On which planet, if any, is a day longer than a year? Mercury Venus Jupiter None 3 / 8 When Earth was very young it is believed to have collided with a Mars-sized object. The impact is thought to be the origin of our current moon.Question: What is the name of the Mars-sized object that collided with Earth? Mars Jr. Planet X Theia Gaia 4 / 8 The universe contains billions of galaxies and hot stars, huge amounts of cold dust and radiation. In between all this stuff you find empty space and large voids with no atoms.Question: What is the average temperature in space? 0 °C / 32 °F -168 °C / -270 °F -270 °C / -340 °F It’s not well-defined 5 / 8 A black hole is an object with such high gravity that nothing, not even light, can escape from it. Black holes come in all kinds of sizes. Some are small, some are big, some are super big. At the center of our galaxy lies a supermassive black hole named Sagittarius A*.What is the mass of Sagittarius A* (compared to our sun)? 4 x the sun 400 x the sun 4 million x the sun 400 trillion x the sun 6 / 8 The sunlight that hits your face is emitted from the sun.How long does it take for light to travel from the Sun’s core to the surface? 8 minutes 80 years 8,000 years More than 80,000 years 7 / 8 Galaxies are huge structures of stars, dust, gas, black holes, and all that other good space stuff. They are be shaped like an ellipse or a spiral, and if they bump into each other they lose their shape and become irregular. We often say that our closest proper neighboring galaxy is Andromeda.True or False: Our neighbor galaxy, Andromeda, is bigger than our galaxy, Milky Way. True False 8 / 8 A moon is an object that orbits something that’s not a star, for instance a planet.Question: How many moons does Pluto have? 1 3 5 None Your score is The average score is 49% LinkedIn Facebook Twitter 0% Restart quiz Share this:TwitterFacebookLinkedIn You may also want to read