Gold was an extremely rare metal on Earth, so anything made of gold was very valuable.
However, gold deposits on the surface were extremely limited, and only a small amount could be mined each year, so gold became a universal currency.
Yet in reality, precious metals on Earth, including gold and platinum, were not scarce at all. They all came from dead stars of the previous generation. After a supernova explosion, iron captured neutrons and became gold; another source was the debris ejected during the merger of two neutron stars.
In the early stages of Earth's formation, most precious metals sank into the Earth's core. If they were all extracted, they could cover the entire surface of the planet.
Human greed could drive people to do unimaginable things. Perhaps one day, some madman would find a way to dig up the gold in the Earth's core, though that idea was unlikely ever to become reality.
Even if he possessed that technology, the other humans living on Earth would not allow him to do it.
Apart from Sun Gold, iron also could not dissolve in mercury to form an amalgam. Since iron could capture neutrons and become gold, was there some connection between Sun Gold and iron?
She understood the principles, but the process of synthesis was not so simple. In theory, the Philosopher's Stone could also produce gold, but anyone who obtained the Philosopher's Stone would not use it to make gold.
Solar meant sun in Italian, and the sun was the star closest to Earth and humanity.
Like the Philosopher's Stone, Sun Gold was a mythical substance. Fully understanding it was beyond the mind of an ordinary person.
On April Fool's Day in 1988, Stephen Hawking gave all humanity a gift—A Brief History of Time. In it, he wrote