the Universe

 

Universe :

The universe consists of millions of galaxies, and what our solar system, which includes the sun, earth, moon and planets such as Jupiter, Saturn and Mars, is only a very small part of one of these galaxies, called the Milky Way, and there are a hundred million stars in it that cover a huge area that requires millions of light-years to measure.

Location of our solar system:

Our solar system (the sun, Earth, Mars, etc.) is located only 28,000 light-years away from the center of our galaxy - the Milky Way - and the entire solar system rotates slowly around the center of the galaxy.

The size of the universe that we see:

Radius = 15 billion light years.

Age of the universe:

Scientists estimate the age of the universe at about 16 years, and an age equals 1000 million years, so the estimation of the age of the universe is about 16 thousand million years, and God knows best.

What is a galaxy:

It is a name given to a huge area that includes a very large number of stars and planets, and our known sun is only one of the millions of stars the largest and smallest that make up our galaxy only, and our galaxy of this far-reaching dimensions is only one galaxy in the universe from millions of galaxies. Astronomers on our galaxy: (the island of our world), that is, it is only a very small island in a huge ocean, and in the universe there are more than a hundred million galaxies.

Number of galaxies in the universe:

Scientists estimate the number of galaxies in the universe to be more than a hundred million galaxies.

Galaxy shapes:

Some of them have a spiral shape, others have an oval shape, and the chamfered galaxy has two arms on each side.

The distance between the two ends of our galaxy:

Scientists estimate the distance between the two ends of our galaxy only 100,000 light years.

 That is, 946080000000000000 km (946080 trillion km).

Galaxy Diameter:

Our galaxy is 70,000 light-years across.

The name of our galaxy:

Our galaxy is called the Milky Way, or the Milky Way, and the Milky Way is part of the original galaxy the Milky Way and the Milky Way is the part of the galaxy in which our known solar system is located.

The most distant stars in our galaxy:

The farthest star in our galaxy lies 63,000 light-years away.

Area of ​​our galaxy:

= 109645852384000000000000000000000000 km2

= (109 billion, 645 million, 856 thousand and 384 trillion trillion km2

The most distant point in the universe that scientists can observe with the largest telescopes:

The farthest point in the universe in general that scientists can observe through the largest telescope is located 16,300 million light years away, or 154,211,040,000,000,000,000,000 miles.

 That is (154 thousand million and 211 million and 40 thousand trillion) miles.

The most distant object or space object that can be seen with the naked eye:

It is the Andromeda galaxy (the largest galaxy), which is 2,150,000 light-years from Earth.

What is a star:

It is a self-illuminating luminous object.

What is the planet:

It is a dark body, and it acquires its light from the star, which is smaller than the star, and orbits around the star, such as: planet Earth, Mars, Mercury, Venus and Jupiter.

The most famous stars larger than the sun:

The blue star (about 2100 times larger than the sun), the house of Gemini, the star of Vega, the star of Basilion, the star of Arcturus, the star of Intarsi, and Ptlugos, and there are hundreds of thousands of bright stars in themselves, which are thousands of times the size of the sun.

The most famous stars smaller than the sun:

There are stars smaller than our known sun, such as: the star of Bernard, the Wolf star, and the star of Sirius, and there are millions of stars smaller than the sun.

The number of stars in our galaxy:

In our galaxy alone there are more than a hundred million stars.

Number of stars in the universe:

There are hundreds of millions of massive stars in the universe.

The brightest and most bright stars:

The star Atia Karpna, which is about 6 million times more radiant than the sun, and there is the star Signus, the giant star, and the Polar Star, whose strength exceeds the power of the sun thousands of times.

Light year :

It is the amount of distance light travels at its speed in a whole year, and the speed of light is equal to 300 thousand km per second, so the distance that light travels in a year is equal to

  300,000 x 60 x 60 x 24 x 365 = 9,460,800,000,000 km

= (9 trillion + 460 billion + 800 million kilometers), the light year is: a unit of measurement for large astronomical distances, and this scale was chosen due to the enormous dimensions between cosmic bodies.