1. The closest planet to the Sun is...
2. In space, light travels at the speed of...
3. When atoms join together in chains, the resulting object is called a...
4. Which of these three statements is correct?
5. The Moon and the planets appear bright at night because...
6. The average temperature in space is...
7. When stars larger than the Sun run out of fuel, there is usually a giant explosion called a...
8. Which of the following are all dwarf planets?
9. How long does it take for the Moon to circle around the Earth?
10. The only star that can be seen in the sky during the day is...
11. There are 165 known planetary moons. Earth has just 1. How many does Jupiter have?
12. In Space, a distance of 6,000 billion miles is better known as a...
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