Monday 17 December 2012

Science Journal 11: Asteroid Mining


Asteroid Mining

For our grant proposal, our group is doing asteroid mining.  We chose asteroid mining because it is something we do not know much about, but that seems possible.  Larry Page, one of the founder of google, and James Cameron have decided to try and make asteroid mining into a business venture.  Many of the Earth’s precious metals are believed to have reached the Earth through asteroid impact.  Because they weren’t formed naturally on Earth, their supply is limited, making them very expensive.  As well, asteroid impacts tend place these metals in areas that are hard to reach.  An example of one of these minerals is platinum.  Earth does not have very much of it, making it very expensive.  However, many asteroids near Earth contain a large amount of platinum.  James Cameron plans to mine these minerals by first launching a telescope in outer space.  This telescope will orbit the Earth, and identify asteroids that have minerals that are in demand.  Once the asteroids have been identified, they will launch a ship to the asteroid, which will not be manned.  Cameron and Page have predicted that in time, asteroid mining will become extremely popular, and it will be feasible to place things such as refuel stations and repair stations in advantageous locations throughout space. 

Another precious resource that Page and Cameron plan to extract from asteroids is water.  Fresh water is an extremely valuable resource, since it isn’t just a want, we need it to survive.  Many people predict that the next major war will be fought over our fresh water resources.  Whether or not people believe global warming is an actual crisis, climate change is occurring.  The Earth is gradually increasing in temperature, and this is having drastic effects on not only the environment, but on our fresh water resources. Only about 3% of the total amount of water on Earth is fresh water.  Of that 3%, around 70% of the water is made up of glaciers and ice caps.  Because of climate change, these glaciers are melting, and our insubstantial percentage of freshwater on Earth is shrinking even more.  Unless we find a way to stop this climate change, the price of water will keep going up, and it will soon be a luxury. 

Page and Cameron have calculated costs, and have estimated that mining for platinum on asteroids will cost less in the long run than mining for it on Earth.  As the resources on Earth decrease, it will become harder and more expensive to mine them.  It is thought that an asteroid about 500 meters is capable of holding the same amount of platinum we have ever mined on Earth.  This is quite a large amount of platinum, and will definitely be an advantage in the long run.  Devices that use platinum will become cheaper and more accessible.   Around 100 out of the 8900 near-Earth asteroids are thought to contain water. As I mentioned before, water is an extremely valuable resource, and it would be extremely beneficial to the world if we are able to get more of it. 

One of the best advantages of asteroid mining is the significant impact it has on improving the state of the environment.  Mining right now has many negative effects on the environment, and many people feel as if we’re consuming more energy than we’re getting.  Though launching rockets will affect the environment at first, it will have a much lower impact than mining does. We will have to use a lot of fuel, which will take up a lot of natural resources.  As well, we will have to use resources to construct rockets.  Once we get enough infrastructure in space, we can completely transfer all mining activities out of Earth, and experience no environmental effects of mining except for the use of the resources we mine.  

Bibliography:
http://www.techradar.com/news/world-of-tech/asteroid-mining-backed-by-google-james-cameron-1077565
http://www.unwater.org/statistics.html

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