Allah Almighty says:[And He it is Who created the night and the day, and the sun and the moon. They float, each in an orbit.] (Al-Anbiyaa' 21: 33)
This glorious verse refers to a scientific fact concerning the system of the universe. Scientific discoveries have proved that we live in a huge universe that depends on revolution. The earth revolves round the sun once a year, the moon revolves around the earth once per lunar month, and the other planets of the solar system also revolve round the sun, each in its own orbit. Besides, most of these planets have moons that revolve around them, each, also, in its own orbit. Astronomers have discovered more than 60 of these moons so far.
The solar system, likewise, orbits a center of our galaxy, the Milky Way. This galaxy consists of more than 130 billion stars. Galaxies, in turn, revolve round a center that only Almighty Allah knows.
The law of revolution applies also to atoms, the smallest units of elements that cannot be seen even by microscopes. An atom is composed of a nucleus whose diameter is less than a millionth of a millimeter. An atom is surrounded by electrons that move round the atom in an orbit. Since all matter in the universe-whether solid, liquid, or gaseous-consists of atoms, this means that the law of revolution applies to everything: stars, planets, moons, animals, plants, sand, seas, air, and so on.