How many planets exist in the universe?

An average galaxy (such as the Milky Way, M31, etc.) has about 10 10 stars (not counting the planets), while there are about 10 6 galaxies in the universe .........The above are rough estimates, and the order of magnitude can be 3 to 4 differences, and it is difficult to estimate accurately.

The largest in the Milky Way are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto, and now Pluto is expelled from the nine planets.

There are countless planets in the universe.

The total number of planets in the universe is about 1 trillion (1 followed by 20 zeros). We have about 40 billion planets in the Milky Way, and so many of them are so far away that we can't see them, only the galaxy they're in.

There are about 700 trillion stars in the entire visible universe, and he said that this is "the most accurate observation data so far in 2018". Simon Driver, Ph.D. from the Australian National University's School of Astronomical and Astrophysical Studies, reported that his research team used the most powerful astronomical telescope in the world to select a region of space near the Earth for local observations, and then calculated the number. If you want to literally represent this number, you need to add 22 "0s" after the "7".

There are hundreds of millions of planets in the universe, and more importantly, as of now, we don't know how big the universe really is, let alone what else lies beyond it.

Therefore, the planets in the universe can only be roughly calculated in billions.

What's more, there are so many black and white holes in the universe, and the universe is devouring and releasing planets every minute.

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.