1. Astronauts can grow up to two inches taller in space.
2. The Moon is slowly moving away from earth at about 3.8 cm every year.
3. The current American flag was designed in 1958 by a high school student.
4. All the blinking in one day equates to having your eyes closed for 30 minutes.
5. All the blinking in one day equates to having your eyes closed for 30 minutes.
6. "Go." is the shortest complete sentence in the English language.
7. The Mississippi River once started flowing backwards after an earthquake.
8. The most common last name in the world is Lee.
9. The average person has over 1,460 dreams a year.
10. The pupils of a goat's eyes are square.
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