Concept: The Universe

What is the Universe? 

The range of the universe is infinite. Nobody knows how big the universe is. It is a vast space that contains many unimaginable elements. That consists of more galaxies. Our Milky Way is also one of them. Which our solar system exists. 

YOU KNOW:- The Science that studies the Universe is called astronomy. A device named the telescope was made by Galileo. It helped the scientific study of Astronomy.  

What is the Big Bang Theory?  

How is it? 

The Big Bang Theory was one of the most prominent theories about the origin of the Universe. This was first proposed by a Belgian astronomer named Georges Lemaitre. According to this theory, the present-day universe began and has been expanding from a tiny atom about 13.7 billions years ago. The expansion of the universe has been occurring till today. According to astronomers, at least 125 billions galaxies are there in the universe. The word universe originated from the Latin word Universe, which means all matter and all space.

 SOME MORE INFORMATION ABOUT THE UNIVERSE 

The Universe includes living things, planets, stars, galaxies, dust clouds, light, and even time. Before the birth of the universe, time, space and matter did not. Galaxies were largely empty. The universe has not always been the same size. Since its birth, the universe has been expanding into our world at a very high speed. So the area of space we now see is billions of times bigger than it was when the Universe was very young. 

YOU KNOW: Astronomy is called cosmology in the Russian language. 

Big Bang Theory, the Origin of the Universe and solar system?

Theories about the origin of the solar system.  

Some of them are : 

Geocentric theory 

Heliocentric theory 

The Nebular Hypothesis  

DEFINE GEOCENTRIC THEORY:  

This theory was proposed by an Egyptian Astronomer named Ptolemy. According to this theory, the earth is at its center, and the sun and the other castle bodies revolve around it. 

DEFINE HELIOCENTRIC THEORY: 

This theory was proposed by a Polish astronomer named Nicolaus Copernicus. According to this theory, the sun is at its center, and the planets, satellites, and other castle bodies revolve around it. 

DEFINE NEBULAR HYPOTHESIS: 

This theory was developed by Immanuel Kant. According to this theory, the planets were formed out of a cloud of dust and gases associated with the sun. 

What is a solar system? 

Our Solar System was formed about 4.6 billions years ago. It consists of the sun, eight planets, and their satellites. The solar system also has Comets, Asteroids, and Meteoroids. Those eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. 

What is it on earth? 

Earth is the only planet in our solar system that is capable of supporting life as we know it. It has the right temperature because it is neither too close to the sun nor too far from it. So living things can survive on the earth. The earth consists of three layers. They are Crust, Mantle, and Core. On the earth, we observe people, animals, mountains, buildings, roads etc. living on the earth. 

YOU KNOW: April 22nd is celebrated as World Earth Day.