if gold is made from supernova how it came to earth these explosions are so common?

Question

also what makes meteor iron? where meteors come from ? stars?

Answer 1

Every element except for hydrogen, helium, and some lithium originated from virtually every star that's gone supernova since the beginning of the universe. Our planet, solar system, even ourselves are made up of essentially, stardust.
When a star of sufficient mass nears the end of its main sequence, it is made up of layers of progressively denser elements, much like an onion, however, once iron starts to result from fusion in the core of the star, the supernova is imminent. Since it takes MORE energy to form iron by fusion, the mass of the upper layers of the star collapses inward. Upon reaching the now non-fusing iron core, the shockwave of the collapsing layers rebounds, blowing most of the star apart and distributing the various elements created throughout space. During the instant of the explosion, so much energy is released, trillions of fast chain reactions cause some of the expelled material to undergo further fusion forming the heaviest of elements such as gold, lead and uranium. Meanwhile, the remains of the core suffers one of two fates depending on the remnant's mass. If the remaining core is between 1.4 to 3 solar masses, the result is a neutron star, more than 3 solar masses and a black hole is the end result. As to the gold and other elements formed in the explosion, over time they are incorporated into newer generations of stars as well as planets...given that the universe is approximately 14.6 billion years old and the average lifespan of a candidate supernova star is only a few million years at best, an immeasuable amount of the heavier elements has been produced with each new generation of massive stars creating even more.

Answer 2

According to theory, everything other than Hydrogen came from supernovas and stars. Our entire solar system and planets are formed of gases and residue from old stars. That is where the metals and other elements were formed.

Answer 3

The rocky debris and minerals which were the ejecta of a super nova.crashed into a hydrogen field.
This happened over 6 billion years ago.
The result was our solar system and everything you see in our solar system.