THE UNIVERSE.

Since ancient times people looked at the universe with amazement. Before they understood anything about what the gods were, they had worshiped the sun, the moon, and the planets as gods. And when they realized the movement of the body and the body in the universe, they realized how to measure time and set up the calendar and timing.

NASA Hubble Space Telescope.

 At any clear night, you can see a large number of stars if you are away from the city lights. Even though they are small objects in front of your eye, they look like points in the sky, but they are actually large spherical bodies that rotate in their own spheres and release a lot of radiation heat and light.

Various types of Galaxies.

It seems small to us because millions of kilometers away from us, so scientists do not measure the cosmic distances in the normal kilometer, but the light years. The light year is the distance traveled by light in a year, and these distances are estimated at about 9,000,000,000,000 kilometers. The closest star to the sun is the "Alph Centauri A", which is about four light years away from the sun.

Imaginary Image of our galaxy "Milky Way"

There are many stars, some of which are bright, some of which are obscured by light, and not only on the size of the star but there are several factors that make up the brightness of the star, including the age of the star, size, proximity or distance from Earth. The stars emit different colors, the star emitted by a red light is cooler than the star emitting a white, bluish light.

The Andromeda Galaxy is twice in size
than our galaxy.

The most important star for a human is the sun. It emits a yellow light and looks great to us, but it is much smaller in size than many other stars.There are many stars, some of which are bright, some of which are obscured by light, and not only on the size of the star, but there are several factors that make up the brightness of the star, including the age of the star, size, proximity or distance from the ground. The stars emit different colors, the star emitted by a red light is cooler than the star emitting a white, bluish light. The most important star for man is the sun. It emits a yellow light and looks great to us, but it is much smaller in size than many other stars. In spite of the size of the stars and the distance from each other with distances of years of light, they are located in societies much larger in size and called galaxies, and the stream contains billions of stars, which revolve around the center of the galaxy, which is called the black hole.

The Crab Nebula.

 On a clear night, you may see part of our Milky Way galaxy extending along the sky horizon. The stars within the galaxy can be divided into small astronomical groups known as constellations or astronomical images known as their forms. as for the Galaxy, in order to see it full landscape, you will have to travel outside the galaxy which you will need to travel for 100,000 years. the nearest galaxy is known as " The Andromeda" galaxy, just 2 million years far away. there are more in the universe, the thing we call "Nebula" which is a collection of stars and cosmic dust like the "Crab Nebula".

The "Southern Cross" Constellation.

We don't actually know how much big is our universe, but there are theories and one of them that says the universe is expanding so fast like a swelling balloon, affected by the "Dark Energy",  which is still unknown power that fills the universe everywhere, the objects in the universe are going away from each other by imaginary speeds, leaving behind more dark matter, some scientists say the expansion of the universe started since its existence nearly 13500,000,000 years ago, since the universe was birthed there has been stars, galaxies & planets forming everywhere very slowly, the stars form, age, dims away, then explode.