What is the size of the universe? Detailed answer

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What is the size of the universe? Detailed answer

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What is the size of the universe?

It is simply impossible for a person to imagine the actual size of the universe. Not only do we not know how big it is, but it is even difficult for us to imagine how far it can stretch.

If we start to move away from the Earth, we will understand why this is so. Earth is a small part of the solar system. The solar system includes the sun, planets that revolve around the sun, asteroids, which are small planets, and meteors.

Our entire solar system, in turn, is a small part of another large system called a "galaxy". The galaxy consists of millions and millions of stars, many of which are much larger than our Sun and have their own solar systems.

So, all the stars that we observe in our galaxy, which we call the "Milky Way", are "suns". The distance between them is measured in light years, not kilometers. In one year, a beam of light travels over 11 km. Alpha Centauri - the closest and brightest star - is located at a distance of more than 000 km from us.

But let's imagine the size of our galaxy. It is believed that its diameter reaches 100 light years. This means 000 times 100 km. But our galaxy, in turn, is a small part of another, larger system.

There are probably millions more galaxies outside the Milky Way. But perhaps all of them together form an even more significant system.

That is why it is difficult for us to imagine the size of the universe. By the way, scientists believe that the universe is expanding. This means that the distance between two galaxies doubles in a few billion years.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

In which city is the arrival of spring declared by a special decree, depending on the blooming of the chestnut tree?

In Geneva, for 2 centuries, there has been a tradition to declare the onset of spring by a special decree when the first leaf is blooming on the "official chestnut tree" growing under the windows of the cantonal government building. According to statistics, most often spring was announced in March, although often earlier, and in 2002 the chestnut tree completely blossomed on December 29th. The most paradoxical year was 2006: first spring was announced in March, and then again in October, as the tree unexpectedly bloomed again.

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The 12-meter unmanned boat is equipped with a winch that allows you to lower the mapping equipment under water to a depth of 300 meters. 10 cameras in real time transmit images to screens at the headquarters of Sea-Kit International in the British village of Tollesbury, located in Essex in the south-east of England.

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