Can astronauts cry? Detailed answer

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Can astronauts cry? Detailed answer

Big encyclopedia for children and adults

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Can astronauts cry?

Astronauts cannot cry in the same way as we do on earth - the tears that stand out do not flow down, but remain in front of our eyes in the form of small balls. In addition, they can cause an unpleasant burning sensation, and tears have to be brushed off manually. It turns out that crying as one of the types of psychological relief is inaccessible to a person in weightlessness.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

What are freckles?

To understand what freckles are and how they appear, we must understand what gives skin its color in the first place.

The most important pigment in the formation of skin color is melanin. We can say that the difference in skin colors of different races depends entirely on the amount of melanin.

By the way, in the lower forms of life, it is melanin that makes it possible for some fish and lizards to change their color. Its most important function for humans, besides color management, is to protect us from the harmful effects of too much exposure.

Melanin is produced by a network of special cells that are scattered throughout the lower layer of the epidermis - the thin outer part of our skin. These cells are called "melanocytes". Now we come to the question: what are freckles? So, freckles are just clusters of melanocytes in specks. This is why freckles have such a brownish color, the color of melanin pigment. Why do some people have freckles and others don't? The reason is heredity. Our parents decide for us whether we get freckles!

The color of freckles (actually the color of the melanin in them) can range from light tan to dark brown, depending on sun exposure and heat. Not only can sunlight darken freckles, it also produces new melanin.

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