The sun is one of the stars of our galaxy, around which the planets and their satellites rotate. The sun is the only star in the solar system.
In this article from the column "Cosmos" we have prepared for you the most interesting facts about the sun.
Surely you have never heard of many of them. Well, the more interesting it will be to read about the great heavenly body, and not only to students of the 4th grade, but also to adults.
So, before you interesting facts about the sun.
- Our planet Earth is located at a distance of 149.6 million km from the Sun. Due to this, sunlight takes 8.2 minutes to reach our planet.
- The temperature of the sun is very different. The highest temperature in the core (15 million ⁰C), and the lowest on the surface (only 6,000 C).
- If at least a drop of matter from the solar core fell to the Earth, then no one and nothing could survive within a radius of 150 km from the epicenter of its fall.
- In the period 1640-1700 there were no sunspots on the Sun, as a result of which its activity was minimal. This period is called the "Maunder Minimum" (after the English astronomer). At that time, the climate on Earth has noticeably changed. The temperature dropped to such an extent that some of the rivers that did not freeze before that froze.
- An interesting fact is that there is much more water on the Sun than on Earth. However, there it exists in the form of steam, accumulated in sunspots and a narrow layer under the surface of the sun.
- An interesting fact is that in 1999 one could see a total eclipse of the sun, perfectly observed from Romania. In honor of this phenomenon, the authorities issued a special bill. It depicted a small window to observe the eclipse.
- The sun radiates electrons and protons, which are often called the solar wind. Their speed reaches 450 km / s.
- Planet Earth is at an ideal distance from the Sun. If we were a little closer to it, then everything would just burn out. And vice versa - if our planet were further, then everything would be frozen from the cosmic cold.
- And here is another interesting fact about the Sun. It turns out that if you watch the sunset from Mars, then the sunset will not be red, as we used to, but blue.
- When we look at the Sun, it seems to us that it is blindingly yellow, but this is just a play of light. In fact, it is white.
- Curiously, the Sun is a gaseous ball, having such a shape due to its own gravity.
- As a rule, an eclipse of the sun, which can be observed anywhere on Earth, occurs once every 200-300 years. But almost every year it can be seen in one place or another place on our planet.
- An interesting fact is that the northern lights are due to the sun. It is this that releases a huge amount of charged particles (the so-called "solar wind") that interacts with the atmosphere. As a result, a magnificent glow appears in the sky. By the way, Mikhail Lomonosov wrote about this phenomenon in his famous ode "Evening reflection on God's majesty in the case of the great northern lights".
- The Catholic Church recognized that the Earth moves around the Sun only in 1992. Until that time, the official position of the Vatican was the opposite: that the Sun rotates around a stationary Earth (although science several centuries ago already knew the correct answer to this question).
- The radius of the sun is 696 000 km. This means that it is 109 times the radius of the Earth.
- Interestingly, the Sun also does not stand still in the middle of space. It moves around the galaxy (by the way, our galaxy is called the Milky Way). The sun takes about 250 million years to complete one turn.
- According to scientists, the age of the Sun is almost 5 billion years.
- Also, scientists estimate that in one second it radiates approximately 390 billion trillion kW of energy.
- Solar radiation is a deadly threat to any form of life because of the presence of radiation. However, thanks to the earthly atmosphere that blocks this radiation, we live in complete safety.
- An interesting fact is that the mass of the Sun is more than 99% of the mass of the entire Solar System. For example, it is heavier than the Earth more than 330,000 times.
- The brightness of the sun is comparable to the brightness of 4 trillion. trillion 100 watt bulbs. Such a figure, of course, is beyond comprehension.
- Gravity of the Sun is 28 times more than Earth's. If a person weighs 50 kg on Earth, then on the Sun its mass will be equal to 1500 kg.
The ratio of the size of the sun and planets
- It is curious that if you observe the Sun and the Moon from Earth, then both celestial bodies will seem almost the same. However, this is just an optical illusion. The sun is distant from Earth 400 times farther than the moon. Interestingly, it is about the same size as the moon. That is why visually it seems that both luminaries are the same.
- If you reduce the Sun to the size of a soccer ball, then Jupiter will look like a table tennis ball, and the Earth will be the size of a pea.
- Every second, about 700 billion tons of hydrogen are burned on the surface of the Sun. However, do not worry about this. According to scientists, solar energy will be enough for at least 5 billion years.
- In order for the sunlight to reach the farthest planet, it takes almost 6 hours. Recall that sunlight reaches us in 8.2 minutes. The speed of light is 300,000 km / s.
- Surprisingly, the temperature of lightning is 5 times higher than on a solar surface. Perhaps that is why Nikola Tesla was so fond of the secret lightning and studied electricity all his life.
- Interesting facts are that the sun also has an atmosphere. However, it goes far beyond the boundaries of Pluto.
- Astronomers claim that a total solar eclipse cannot exceed 7 minutes 40 seconds.
- The sun consists of hydrogen and helium. Also in its composition are present in small quantities of magnesium, nitrogen, silicon, neon, oxygen, iron, sulfur and carbon.
- In honor of the Sun, the authorities of Peru gave the name of their currency.
- It is officially believed that the ancient Greek scientist Aristarchus was the first to suggest that the Earth moves around the Sun, and not vice versa. This fact is interesting because at that time most people believed that the center of the universe was the Earth.