Signs of the Quran - Astronomy

Scientists know that metals other than hydrogen (H) and helium (He) were all created through nuclear fusion inside giant distant supernovae, where the temperature is billions of degrees hot and nuclear fusion is taking place. Hydrogen and helium build up to 98% of our universe (see below and Universe development, Formation)

Then, at some stage, these young giant stars explode and shower out meteors carrying heavier elements into the universe. They in their turn make the planetary bodies richer in substances. So a young planet earth consisted mainly of hydrogen and helium some 4 billion years ago before it became richer in the essential metals like iron. Thus iron was literally sent down.

The other translation for the Arabic word "anzalna" is "we revealed". In fact iron wasn't around for the usage of mankind since the very beginning. The method for refining, melting and moulding iron was discovered during the Iron Age, some 5000 years before Christ. Apart from enabling us to build weapons and bridges and driving technological progress, iron is important for all life and builds up the solid core of the planet. It is also abundant in the mantle as well as the crust (G 1/2, B 6/4).

The pictures above show, at the very top: QUASARS AND SUPERNOVAE, THE PLACES OF NUCLEAR FUSION and below HEAVY ELEMENTS ARE FORMED AND SENT OUT IN METEORS