1.    Venus is the only planet that spins backwards relative to the other planets.

1. There are more volcanoes on Venus than any other planet within our solar system.
2. Uranus has 27 moons that have been discovered so far.
3. Because of its unique tilt, a single night on Uranus lasts for 21 years!
4. The only large moon in our solar system to orbit in the opposite direction of its planet is Neptune’s moon, Triton.
5. A day on Pluto lasts for 6 days and 9 hours.
6. If you were driving at 75 miles (121 km) per hour, it would take 258 days to drive around one of Saturn’s rings.
7. Neil Armstrong first stepped on the moon with his left foot.
8. The planet with the most moons in our galaxy is Jupiter, with 67.
9. “Moon” was Buzz Aldrin’s mother’s maiden name.
10. February in 1865 and 1999 are the only months in recorded history not to have a full moon.
11. The first artificial satellite in space was called sputnik.
12. Astronauts cannot burp in space!
13. Uranus was originally called “George’s Star”.
14. As Saturn has a very low density, if you were able to put it into water, it would float!
15. The first living mammal to ever go into space was a dog named “Laika” from Russia.
16. The term “astronaut” is derived from the Greek words ástron, meaning “star”, and nautes, which means “sailor”. So, the word astronaut means star sailor!
17. A day on Mercury is equivalent to 58 Earth days, and a year is equivalent to 88 days!
18. There are now 4 dwarf planets in the Solar System: Ceres, Pluto, Eris and Makemake.