Category: English
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Why do some stars twinkle and others don't?
If you look at the starry sky at night in clear weather, you will notice how some stars twinkle and even change their color. For example, the star Sirius from the constellation Canis Major, which is one of the brightest in the sky, literally shimmers with all the colors of the rainbow. This is an…
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Underground caves have been discovered on the Moon. What is known about them?
Our Moon is a strange object. The fifth largest moon in the solar system was likely formed by the collision of Earth with an unknown planet the size of Mars. Astronomers call this planet Theia, and the catastrophic collision is called the “Giant Impact” hypothesis, which occurred just 50-100 million years after the formation of…
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How does a laser printer work and when is the best time to buy an inkjet?
Imagine that you are an artist, but instead of a brush you have a laser beam, and instead of a canvas — electrified drum. Sounds like science fiction? Then welcome to the world of laser printers! These amazing devices turn digital data into tangible documents faster than you can reach for the finished image. We…
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Why is water wet and how do we feel moisture?
At first glance, the question “why is water wet” seems rather strange, because it is water that makes everything around wet. However, it is not without meaning; moreover, scientists for a long time could not answer it, and even continue to argue whether water is wet at all. The very concept of “wet” usually implies…
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New details about the famous Ice Man have become known. What we didn't know about evolution
A new DNA analysis of the Iceman shows that his ancestors were not what scientists previously thought. In 2012, scientists compiled a complete picture of Ötzi's genome, which suggested that a frozen mummy found in a glacier in the Tyrolean Alps had ancestors from the Caspian steppe. But something didn’t add up. Now scientists decided…
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A global Windows outage has blocked the operation of airports, banks and thousands of companies. What happened
On Friday, July 19, reports began to be received from all over the world about massive failures in computer systems. They affected almost all areas of activity, including banks, the world's leading media, airports and many other companies. As a result, numerous flights were cancelled, and aircraft already in the air were forced to seek…
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Why do you want to sleep in extreme heat and how to deal with it
One of the body’s reactions to heat is drowsiness. Photo source: ethnomir.ru Contents 1 What happens to the body in the heat 2 Why a person gets tired quickly in the heat < li>3 Why drowsiness occurs in the heat 4 What to do if you want to sleep in the heat What happens to…
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This drug protects against HIV 100 percent, but it is not cheap
For more than 40 years, scientists have been working to find a way to treat HIV, as well as create effective protection against it. However, none of these problems have been fully resolved. It was only possible to develop antiretroviral drugs that slow down the reproduction of the virus, but do not destroy it. And…
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Why do cats see in the dark?
Despite the fact that cats occupy the first place in the list of the most popular pets in the country, they have long been surrounded by an atmosphere of mystery – myths that cats have nine lives and can see in the dark have been circulating for centuries. Popular memes with cats with red eyes…
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Due to global warming, the days are getting longer
One of the most obvious consequences of global warming is the melting of glaciers and rising water levels in the world's oceans. However, there are also less obvious consequences. For example, a recent study showed that an increase in the average temperature on the planet will inevitably lead to a slowdown in the Earth's rotation.…