[meteorite-list] Capturing asteroids in orbit
From: Sterling K. Webb <sterling_k_webb_at_meteoritecentral.com>
Date: Sat, 24 Apr 2010 00:50:59 -0500 Message-ID: <B9776B074362445194C44C7D830AA20B_at_ATARIENGINE2> Melanie, List, Our present level of technology is (just barely) capable of going to an asteroid and MINING some of it. In 1998, we sent a robot explorer to the asteroid Eros to photograph it and map it. No sample return. A number of spacecraft and a large crew could mine some of it, using solar heating to melt the metals out and bring them back to be separated and refined. If Eros is typical of stony meteorites, then it contains about 3% metal. With the known abundance's of metals in meteorites, even a very cautious estimate suggests 20,000 million tonnes of aluminium along with similar amounts of gold, platinum and other rarer metals. In the 2,900 cubic kms of Eros, there is more aluminium, gold, silver, zinc and other base and precious metals than have ever been excavated in history or indeed, could ever be excavated from the upper layers of the Earth's crust. How much is Eros worth? Today's price for gold is about $1000 per ounce or about $25,000,000 per ton. It means the value of the gold in asteroid Eros is about $4 trillion. That is just the gold. Platinum is equally expensive. Eros contains a lot of rare elements and metals that are of use in the semiconductor industry for example. At today's prices, Eros is worth more than $50 trillion. That is just in one asteroid and not a very large one at that. There are thousands of asteroids out there. John S. Lewis, author of "Mining The Sky," said: ??an asteroid with a diameter of one kilometer would have a mass of about two billion tons. One such stoney asteroid would contain 30 million tons of nickel, 1.5 million tons of metal cobalt and 7,500 tons of platinum. The platinum alone would have a value of more than $150 billion!?. The huge sums of money involved could one day induce mining companies to look towards the heavens. It may not happen until we have exhausted most of the Earth's natural resources, but it will happen." MOVING an asteroid is also technically feasible, although we are newer to the idea. It might be cheaper to move a one-kilometer asteroid than to mine it in place. We mine it at our own speed once it was in Earth orbit. But there is the inherent public relations of problem of people who might get... well, nervous about us shoving a big asteroid toward the Earth. I don't think we know enough to estimate the cost of moving an asteroid yet. More reading: http://en.wikipedia.org/wiki/Asteroid_mining http://miningasteroids.com/ http://www.spacefuture.com/archive/the_technical_and_economic_feasibility_of_mining_the_near_earth_asteriods.shtml Sterling K. Webb -------------------------------------------------------------------------------- ----- Original Message ----- From: "Melanie Matthews" <miss_meteorite at yahoo.ca> To: "Meteorite List" <meteorite-list at meteoritecentral.com> Sent: Friday, April 23, 2010 11:20 PM Subject: [meteorite-list] Capturing asteroids in orbit >I wonder if it would possible to send some machines to the asteroid >belt to capture some whole asteroids and bring them to Earth? Or would >they be drifting too quickly in their orbits to capture with the >current technology? Also would decent-sized samples from such captures >be available to collectors? > > ----------- > Melanie > IMCA: 2975 > eBay: metmel2775 > Known on SkyRock Cafe as SpaceCollector09 > > Unclassified meteorites are like a box of chocolates... you never know > what you're gonna get! > > > > > ______________________________________________ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list at meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list Received on Sat 24 Apr 2010 01:50:59 AM PDT |
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