How many planets are there in the universe and how many planets there are in the universe

There are indeed so many stars that can be seen with the naked eye.

But the question is to ensure:

One, you are not short-sighted.

Second, your environment is free of light pollution.

Third, the weather is sunny and the air quality is good.

In fact, one fifth of the Earth's population is now unable to see the Milky Way because light pollution and dust pollution are too severe.

According to the observations of scientists, the number of stars, planets, moons and other planets in the universe is about 20,000,000. But because many planets are so far away from Earth, only their galaxies are currently visible, and there are about tens of billions of planets in each galaxy.

Many scientists believe that the universe was formed by a large ** about 13.8 billion years ago, which was called "quantum physics" by Huilian physicists.

It is speculated that the big ** makes the matter scattered, the space of the universe continues to expand, and after the temperature drops, galaxies, stars, planets and so on in the current universe have appeared one after another.

The "Great Cosmology" was proposed in 1927 by the Belgian mathematician Lemaître, and the theory is one of the most influential theories in modern cosmology.

There are tens of billions of galaxies in the universe that can be observed, and there are about 100 billion stars in each galaxy, and some stars will have planets, and some will have many, such as the sun. Some planets also have moons, such as Jupiter, which has 16 moons.

According to years of exploration, there are currently as many as 1 billion galaxies (extragalactic galaxies) that humans can observe. The Andromeda Galaxy alone contains 200 billion planets. So the planet is just a drop in the ocean to the Milky Way.

There are so many planets in the universe that you can't count them like grains of sand on a river beach. So it's not an exaggeration to say that the universe is boundless.

In recent years, there have been many new discoveries in cosmic observation. First of all, high-performance space telescopes have been able to see the universe 17 billion light-years away, and it has been found that there are many extragalactic galaxies outside the Milky Way. Tens of thousands of extragalactic galaxies have been observed.

There is a vast space between galaxies outside the river, which means that the galaxies at these rivers are not evenly distributed in space. This cosmic structure is a bit like a soap bubble, with a vast vacuum in the middle of the bubble and galaxies scattered on the walls of the bubble. Another discovery is the existence of the "Great Wall of the Universe" in the depths of the universe

These belt-shaped galaxies are like a great wall, about 500 million light-years long, 200 million light-years wide, and about 100 million light-years thick. This is the result of observing 6,000 galaxies. It is about 200 million to 300 million light-years away from Earth.

The latest report from May 2001 shows that astronomers have observed the farthest "edge" of a galaxy ever penetrated by observing a region of space through Japan's Sabaru Astronomical TelescopeScientists believe that Subaru has almost seen the edge of the observable part of the universe, and that there are almost no other galaxies that are farther away and have weaker light that can be observed.

However, although the Subaru Observatory is able to observe the light emitted by almost all galaxies in the universe, measurements from the satellites show that the total amount of background light distributed in the universe is three times larger than that observed by Subaru.

This shows that human beings' understanding of the universe is still in its infancy, and if we want to decipher the secrets of the universe, it is still "a long way to go, and I will go up and down to seek".

Supergiant R136A1 is the largest planet in the universe, with a diameter of no less than 100 million kilometers, almost 3,200 times that of the Sun.