What is the only planet that can sustain life?Įarth Is there a planet that rains glass sideways?Īlthough it might resemble Earth from a distance, HD189733b is a huge gas giant which orbits close to its host star. For example, according to a report in Nature, scientists believe it could be raining diamonds on Jupiter, Saturn and Uranus. Planets such as Venus and Jupiter lack our atmosphere rich in nitrogen and oxygen, and there is no moisture to drive a lifegiving water cycle. It is quite possible that in some places these materials may be concentrated enough to be mined economically. In addition, lithium, cobalt, nickel, copper, zinc, niobium, molybdenum, lanthanum, europium, tungsten, and gold have been found in trace amounts. Thus we get about 8.2 million liters of gold.
Can all the gold in the world fit in a swimming pool?Ī figure commonly thrown around is that the entire global supply of gold would be enough to fill two Olympic sized swimming pools. Based on these rough figures, there is about 20% still to be mined. To put that in perspective, around 190,000 tonnes of gold has been mined in total, although estimates do vary. The below-ground stock of gold reserves is currently estimated to be around 50,000 tonnes, according to the US Geological Survey.
0 kommentar(er)
