Time : 2021-09-17 14:41:36
Điểm: 10/10
Gold is the shining embodiment of wealth. Not only is it used to make expensive products, but it's also used to add extra bling to luxurious items, from smartphones, to supercars, and even beef steaks. But other metals that are rarer than gold are much cheaper. So, why is gold so expensive? Scientists believe gold arrived on Earth after the collision of two neutron stars in space forged gold atoms together into meteorites, which crashed into Earth about 3.9 billion years ago. Over millions of years, Earth's bubbling hot core forced gold nuggets towards the surface. Gold flakes have been found in Paleolithic caves estimated to date back roughly 40,000 years, marking the first known instance of human contact with the material. But what exactly is gold? Gold is a relatively rare metal with lots of versatility. It's highly malleable, meaning it can be deformed or changed without fracturing the material. But what distinguishes it from other useful precious metals is its totally unique bright-yellow appearance.

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