How big the earth is, how big is the universe

The diameter of the Earth is 12,756 kilometers, and the diameter of a typical glass sphere is centimeters, that is, its volume is a million times. For the sake of discussion, we can roughly calculate it as a hundred million times, i.e. the diameter of the Sun is 1,392,000 kilometers, and if it is reduced according to this ratio, then its diameter is about meters.

If the earth were to be compared to a glass ball, what would the size of the world be?

We can look at it in chronological order, first of all, the solar system, generally speaking, the edge of the solar system is the Ultra Nebula, which is a spherical nebula, which envelops the entire solar system in a huge spherical nebula, its diameter is about two light years, and one light year is the year of light in the universe, that is, its diameter will reach 946 trillion kilometers.

The current radius of the universe is about 46.5 billion light-years, with a diameter of 93 billion light-years. However, 93 billion light-years is only the diameter of the universe that we can observe, and since the universe is expanding faster than the speed of light, we cannot know how big the universe really is if we only observe the universe from Earth, which is still an unsolved mystery.

How big is the universe? Star Awareness Project

When the ancient Chinese created the term "universe", they did not know that the earth was the earth, and described that the heaven and the earth were very large [the upper and lower four directions were called the universe from ancient times to the present], that is, the universe includes heaven and earth, and now astronomical discoveries that the sky is very high and very large, far larger than the earth, and this huge [heaven] is called "universe" by scientists. There is no doubt that the universe is larger than the earth, and the earth is an insignificant dust in the universe.

Earth. <>

Solar system. <> universe.

The Earth is smaller than the universe.

宇宙 yǔzhòu: The infinite space that includes the earth and all other celestial bodies.

Infinite space that includes all celestial bodies.

"宇" refers to infinite space, and "宇" refers to infinite time. The totality of all matter and its forms of existence. Philosophically, it is also called "the world".

Earth dìqiú: This planet inhabited by humans, one of the nine planets of the solar system, has an average distance of 149.6 million kilometers from the sun, ranking third among planets, and its equatorial radius is kilometers, ranking fifth among planets in terms of size.

Refers to the whole world: "If the youth is strong on the earth, the country is strong on the earth." "Qing · Liang Qichao's "Ice Room Collection: Anthology".

The universe is big, and the earth is only a small part of the universe.

Earth is the third and fifth largest planet from the Sun:

Age of the Earth: 4.6 billion years.

The mass of the Earth is to the power of ) kilograms;

The volume of the Earth is to the power of cubic kilometers;

The surface area of the Earth is to the power of square kilometers.

The total area of the Earth is 510,000,000 square kilometers.

The universe, on the other hand, is infinite, because the universe is the sum of all physical space and time, and time is infinite.

The word "universe" probably originated from the famous ancient philosopher Mozi (about 468-376 BC). He used "universe" to refer to the east, west, south, and north, and the space in all directions, and "Zhou" to refer to the time of the past and the present. Past, present, or future; Is it a recognized, or an unrecognized......In short, everything is everything.

From a philosophical point of view. It is believed that the universe has no beginning and no end, and that it is boundless. However, we are not going to go deep into this esoteric concept, and we will leave it to philosophers to study.

We might as well zoom out a little and talk about the universe that can be understood and observed using the science and technology available to us, which people call "our universe" or "total galaxy".