Surah Nuh 16:
"And He made the moon a light within them and made the sun a burning lamp."
As is well known, this verse emphasizes the fact that the sun is a cosmic lamp producing light, while the moon merely reflects the incoming light.
Additionally, in a miraculous way, the Quran also mentions that other stars in the sky are also enormous lamps producing light:
Surah Mulk 5:
"We have certainly adorned the nearest heaven with lamps and made them missiles for the devils, and We have prepared for them the punishment of the Blaze."
Surah As-Saffat 6:
"Indeed, We have adorned the nearest heaven with an adornment of stars."
Surah Fussilat 12:
"And He completed them as seven heavens within two days and inspired in each heaven its command. And We adorned the nearest heaven with lamps and as protection. That is the determination of the Exalted in Might, the Knowing."
In these and similar verses, it is stated that the stars we see are actually suns, or conversely, that our sun is also a star. Moreover, it is clearly stated that there is "flame" on the sun and other stars. There is even a reference to the idea that the environment on these stars resembles hell...
The fact that distant stars are also covered in flames and have a hellish fire structure was not widely known by people at that time.
Meanwhile, in the Quran, the word "najm" is used for stars, and "kawkab" is used for planets.
Additionally, just as scientists today say that stars will lose their light and end on the Day of Judgment, our Lord also informed us of this:
Surah Al-Mursalat 8:
"When the stars are extinguished."
After these details about stars, let's revisit the information the Quran provides about the structure of our Earth:
Surah An-Naziat 30:
"And after that, He spread the earth, making it egg-shaped."
From this verse, we understand that the Earth is created in a geoid shape, like an egg, but the meaning doesn't stop there. Because the Earth resembles an egg not only in its outer appearance but also in its internal structure.
Yes, the egg and the Earth are similar.
First, let's consider the external appearance:
Both have a bulging part—the equator—which is wider than the poles.
As you move from the bulge toward the poles, a decrease in size can be observed in both.
So in terms of shape, there is definitely a parallel. And the egg is one of the best examples to describe the geoid shape of the Earth.
Beyond that, the EGG RESEMBLES THE EARTH NOT ONLY IN ITS EXTERNAL STRUCTURE BUT ALSO IN ITS INTERNAL STRUCTURE.
In the center of an egg, there is a yolk.
Around this central yolk, there is a surrounding layer of liquid egg white.
On the outermost part, there is a thin shell.
Similarly, the Earth has a core at its center (which corresponds to the yolk in appearance and structure).
Around the core, there is a molten (liquid) mantle layer (which roughly corresponds to the egg white).
And on the outermost part, there is a thin crust (which corresponds to the thin shell of the egg).

Emre Karaköse