Why can flies walk upside down on the ceiling? Detailed answer

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Why can flies walk upside down on the ceiling? Detailed answer

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Why can flies walk upside down on the ceiling?

We so often see house flies around us that we hardly think what amazing creatures they are. There are so many unusual things about flies that it is difficult to determine where to begin a story about them.

The body of a fly is divided into three parts: the head, the middle part, or thorax, and the abdomen. Three pairs of legs are attached to the middle part. The legs are divided into five parts, the last of which is the foot. The fly walks on tiptoe, that is, on two legs with claws attached to the inside of the foot. Under these paws with claws there are pads that produce a special sticky liquid. Thanks to this fluid coming from the pads, the fly can crawl on almost any surface. She can walk upside down on the ceiling or even on the surface of a glass lantern.

The way the fly looks is also amazing. Her eyes are two large brown balls on either side of her head. Each eye is made up of thousands of lenses. Each lens perceives a piece of the overall picture that the fly is looking at. Such eyes are called compound eyes. On the top of its head, the fly has three more simple eyes, they can only be distinguished under a magnifying glass.

Whiskers, or antennas, of a house fly are an organ of smell, trapping odors. These antennas smell at a very long distance. Therefore, flies appear immediately, as soon as it starts to smell delicious.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Which woman gave rise to the immortal cell line?

In 1951, American Henrietta Lacks was diagnosed with cervical cancer and died the same year. Doctors at the hospital took samples of healthy and diseased tissue from her, which came to the researcher George Gay. He discovered a previously unknown phenomenon: Lux's tumor cells were able to survive and divide countless times. They pioneered the HeLa cell line, which has been used to develop a polio vaccine in cancer, HIV, radiation exposure, and a host of other trials by scientists around the world. It is estimated that more than 20 tons of HeLa cells have been grown since then, which exceeds Henrietta's weight in life by 400 times.

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Kitchen salt asteroid 14.06.2023

The Americans carefully studied a sample of the near-Earth asteroid Itokawa and found crystals of ordinary kitchen salt here, which could not have appeared without the presence of water.

Even 13 years ago, the Japanese spacecraft Hayabusa delivered the first ever rock samples from an asteroid to Earth. This space rock turned out to be the near-Earth asteroid Itokawa, which is approximately 610 meters wide. And all these years, scientists from different countries continue to carefully study these samples. Specialists from the University of Arizona, USA, found crystals of ordinary kitchen salt in the composition of the asteroid, which could not have appeared if there was no water nearby. This again changes the idea of how water could get to our planet.

Scientists continue to search for answers to questions about how complex life on Earth arose. The fact that they were able to find crystals of sodium chloride or ordinary kitchen salt in the composition of the Itokawa asteroid, which could only form in the presence of water, indicates that asteroids played an important role both in the process of its appearance on Earth and in the origin of life.

Currently, scientists believe that the asteroid Itokawa, which flies relatively close to Earth (at a distance of several million kilometers from us), was part of a larger space rock, but then broke away from it. And the rock sample brought from the asteroid is a chondrite, which is a type of meteorite that is part of a rocky asteroid.

According to American scientists, they did not expect to find crystals of sodium chloride, since such asteroids do not suggest the presence of water-bearing minerals.

The authors of the study point out that for a long time it was believed that chondrites, that is, meteorites falling to Earth from rocky asteroids, could not bring water to the planet. But a new discovery suggests that such asteroids likely contain much more water than previously thought.

Naturally, the experts were very surprised by their discovery and were initially skeptical about the results. After all, a sample from the Itokawa asteroid could have been contaminated with other substances, falling to Earth. But a careful study showed that the crystals of ordinary salt belong to the asteroid Itokawa.

The sodium-rich silicate mineral plagioclase was also found in the meteorite. And this mineral was also formed under the influence of water. Therefore, the researchers believe that this proves the fact that the asteroid Itokawa probably contains or contained a lot of water in the past.

The Itokawa asteroid is one of the most common S-type asteroids in the solar system. Therefore, it is assumed that the theory of the origin of water with the help of asteroids that fell to the Earth or meteorites that broke away from them is becoming more and more plausible.

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