The word "astronaut" is derived from the Ancient Greek words "astro" meaning "star" and "naut" meaning "sailor." When combined, "astronaut" literally means "star sailor."

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Your eyebrows renew themselves every 64 days.

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The length of the circulatory system, including veins, arteries, and capillaries, is estimated to be around 60,000 miles. By adulthood, it increases to about 100,000 miles. This extensive network ensures efficient blood distribution throughout the body.

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Pronoia is a strange, creeping feeling that everyone’s out to help you.

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Traveling is good for mental health, and it also reduces the risk of heart attack and depression.

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In fact, banknotes are not made of paper, as many believe, but of cotton. That's why they don't spoil for so long.

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Adrian Mann, hailing from New Zealand, constructed the world's largest grand piano. His ambitious project, named the Alexander Piano, began when he was only 16 and spanned over four years until completion. Measuring an impressive 5.7 meters or 18.7 feet in length, this piano holds the record for the largest of its kind.

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People can suffer from physiological disorder called Boanthropy, that makes them believe that they are a cow. They try to live their life as a cow.


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Each kilogram of excess fat gained causes the body to create 22 km of new blood vessels.

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The golden dart frog, the world’s most toxic amphibian, can’t produce poison if born in captivity.

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The thickness of the skin of a hippopotamus is more than three centimeters and it is so strong that even bullets often do not harm it.

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Crows can recognize and remember human faces for up to five years. And besides, they are quite vindictive, so if you offended a crow, stay on your guard. These birds are able to gather in flocks and together attack the offender of one of them. They may even do it several times out of revenge.

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The concept that falling to the center of the Earth would take approximately 19 minutes has been calculated by scientists, although no real-life attempts have been made to validate this.

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Eminem's real name is Marshall Bruce Mathers III.

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The actors who provided the voices for Mickey and Minnie Mouse, Russi Taylor (Minnie) and Wayne Allwine (Mickey), were married in real life. They exchanged vows in 1991, solidifying a personal connection that mirrored the iconic relationship of their animated characters.

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