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The distance to the Moon, the temperature on Venus, the number of Jupiter's moons: the universe is measured in dizzying numbers.
Free questions with no sign-up, where every answer is a number. Type your estimate: the closer you get to the right answer, the more points you score.
A free game mixes every topic. To play only “Space & Astronomy”, Premium accounts can filter topics in the game settings.
Type your estimate and check it: you'll see the right answer and your points.
1
How many billion years does the Earth have behind it?
Answer: 4 billion years
2
How many men made up Apollo 11's crew, including the one who stayed in orbit?
Answer: 3
3
How many kilometres above our heads does the Space Station orbit?
Answer: 400 km
4
How many films does Star Wars' Skywalker saga count, spin-offs excluded?
Answer: 9
5
Over how many kilometres does the great canyon of Mars stretch?
Answer: 4,000 km
6
At how many kilometres per second does our galaxy hurtle through the universe?
Answer: 600 km/s