نجوم السماء .. كتاب في سبيل موسوعة علمية .. الدكتور أحمد ذكي

Sky stars

You are now standing on the surface of the earth in the open air and the time has appeared and you look at the sky and find a dusty blue dome filled with light. Close your eyes for twelve hours, then open them, and what do you see where you stood at that point on the surface of the earth in... that open space? It is a black dome that has been strewn with small pieces of shiny diamonds, as many as the number of pebbles. Then close your eyes again for twelve hours, and the dome with light will return to you. Return to closing them and opening them, and the dome with light will return to you.
Black spotted dome. . . and so on .

The distance between the day sky and the night sky, in their succession, makes them two different things, and deprives the human mind of the direct intellectual bliss that it enjoys from this phenomenon, the great phenomenon of existence, that phenomenon in which the entire larger world is obscured from its sight during the day, and so it becomes blind and unimaginable. He sees it, while it has been obscured from his eyes by the Messenger of Light in the sky since its rising. Then the Messenger of Light disappears at night, and darkness comes, and the person is in darkness
Be guided, and the greater world will see.

In the light of the sun, he sees the valleys and mountains of this earth, and sees the paths of life and the ways of living in it. He plants in its light, and is warmed by its light.

And in the dark of the night, when the sun goes down, he sees
The most. If we had used arithmetic approximation, we would not have said most, and therefore we would have said all. This globe on which we live is a drop in the ocean. If we extract a drop from the surrounding sea, it will still remain nothing.

The life of the day, when the sun is rising, is a life of earning a living, and earning a living I place among the highest levels of devotion.
The livelihood a person earns is permissible for himself and his family. And with sustenance, gratitude.

(Stars have ages, just as people have ages. They live and they die.)

The life of the night, the life of darkness, for the student searching in the darkness that fills the universe above his head, is the life of knowledge, and knowledge is light. To me, it is the highest level of devotion. Understanding worship. Study devotion. Worship that includes sleight of hand, which is the most strenuous type of worship.

- You stood on the ground, and you did not stand:

I began my speech by stopping you on the surface of the earth, in the open, looking up at the sky. If there were peoples other than us in this vast world, and if there were people and lands like us, and they were able to see you, despite the smallness of the ball on which you are standing, and then your infinite lostness is attributed to the smallness of the ball, then all these peoples would not be able to say that you stood, And you raised your gaze and looked. Some see you above this globe, some see you below it, and some see you in between. What appears to them is that your feet are connected here to the surface of the Earth wherever they are on it, and that the people of the Earth stood on the ball like nails, which were made of iron, shot vertically onto the surfaces of a magnetized ball. An observer may begin with the feet of a man standing at a point on the surface of this ball, and proceed to draw a straight line that passes through the center of the ball and emerges from the other side of its surface, and comes out with it, not at a person’s head, but at a person’s feet. A person says he is standing, but he does not stop. The observer looks at him from that position far from the ground and says that he dangled.

(The ancients looked at the stars in the sky, and wanted to get to know them, so they imagined that each constellation (group of stars) had a shape by which they remembered it. Among its shapes were some that they associated with the shape of a bear, another with the shape of a dog, and another with a snake. And among them, the ancient Greeks linked the name of the name of their gods and heroes. And in the two attached pictures, the first of them contains the constellation known as the Big Dipper, so this is how they empty its stars. And in the second picture is the constellation whose name is Orion, and the Arabs also called it Gemini.)

It is the vast world in which even languages ​​are broken, but there is neither above nor below. There is neither right nor left in it. It is our language, the language of the people of this earth. If we try to impose it on the larger universe, we will stumble.

I asked a boy: What is the brightest star in the sky that his eyes can see?

The sun set, and the sky began to darken. When it got dark, I asked a boy from my family, Which stars in the sky are the brightest? He only glanced at the sky briefly, until he pointed his finger to the west and said: This flower is the brightest thing in the sky.

The boy believed what he claimed, for the flower was truly the brightest
Something in the sky.

But I asked him about the brightest star. A flower is not a star. Venus is a planet, like the planet of this Earth, and its light is not from it. It is from the sun reflected on it.

She explained this to the boy and he looked up at the sky again. It fell on a star in the middle of it. He said: This is the brightest one.
I said yes .
It is the star known as Sirius
In French, Sirius, close to Gemini or the constellation Orion, that Orion who wore a belt of three stars around his waist, and carried a dagger below it, which was a humble symbol of power.

And he is truly the brightest star in the sky. He can hardly doubt this
Looking at the sky.

She asked the boy:

-What are the closest stars in the sky to us?

I kept asking the boy: What are the closest stars in the sky to us? He said: This means Sirius, and here he made a mistake. The brightest things are not always the closest. The candle approaches and becomes light from an electric lamp with a power of one hundred candles placed one hundred or two hundred meters away from us. The luminosity depends on the strength of the light source and its distance from us.

Here the boy asked me: What are the closest stars in the sky to us? I said: It is a star whose name among the Frankish astronomers is Alpha Centaurus, and we Arabized it, so we said Alpha Centaurus. He said: Where is he from heaven? And he wanted to see it. I said, “If I had seen it, I would not have found it despite its proximity,” according to Sirius’ brightness, for it is less luminous in the eye’s sight, and much less. He said: Why don't I see him? I said: Because on the other side of the dome of the sky, the people of the south of our planet can see it.

The boy asked again: How far is this star from us?
The closest stars in the sky to us? I said: It is about 26 million million miles away. The boy opened his mouth. I said: Do you understand? :
He said yes.
I said: Rather, you understood it as numbers, but you did not feel it as distance.
Neither you nor I, because in our lives we only feel distances of a mile, ten miles, and a hundred. As for the million, it is a measurement that is outside the scope of our experience on this earth. He said: How do I feel? I said: The sun is about 93 million miles away from us. Suppose I wrote a dot with my pen, on this paper, and told you this represents the sun. Do you know where the star Centauri, the closest star in the sky to this point, is located? He said: Where is it located? I said: Then we represent it with two points like this, 4 miles away from, and I say two points, because this star consists of a pair of stars. This proverb shows you how far apart the stars are from each other.
Then there are imaginary distances between the stars.