Meet Amun 3554. Doesnt look like much, right? Little more than a mile wide, its one of the smallest M-class (metal-bearing) asteroids yet discovered. Unless it ever decides to smash into us  a theoretical possibility, but extremely unlikely over the next few centuries  it will continue orbiting the sun, unknown and unmolested.
That is, unless Planetary Resources has its way. Planetary Resources is the asteroid-mining company launched Tuesday in Seattle, with backing from Microsoft and Google billionaires, along with the equally prominent James Cameron and Ross Perot Jr.
Its object is to completely dismember poor little rocks like Amun.
Thats because Amun is a goldmine  well, not gold so much. But it does contain a cool $8 trillion worth of platinum, an essential precious metal used in everything from jewelry to fuel cells to computers (and one thats currently trading at the same rate as gold  $1500 an ounce.) On Earth, only a few hundred tonnes of the stuff are produced every year.
The $8 trillion figure is an estimate based on observations by John S. Lewis, professor of planetary science, author of Mining the Sky: Untold Riches from the Asteroids, Comets, and Planets, and now a consultant to Planetary Resources. He also found 3554 Amun to contain another $8 trillion in iron and nickel, and a mere $6 trillion worth of cobalt.
So, the total payout from one unassuming asteroid? $20,000,000,000,000.
Thats what got Planetary Resources co-founder Peter Diamandis so excited. There are $20 trillion checks up there waiting to be cashed, he enthused at a space development conference in 2006.
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To become the wealthiest company in the world, Planetary Resources need only capture one rock. Less than that, in fact.
Apple, currently the worlds most valuable company, has a market cap of $500 billion. To match that in resources, let alone market cap, Planetary Resources need only mine one-fortieth of 3554 Amun.
Of course, theres a catch. You couldnt offload all those metals on the world market at once, for fear of crashing their prices. But the company would still own that much in equity, which would allow them to borrow against it. They would be that wealthy, to all intents and purposes. Thats just how capitalism works.
Still, for all this wealth, platinum and gold may not be the most important thing the asteroid miners are hunting. The water on some ice-bound asteroids could count for more in the long run. Not only does it make the existence of life in space that much easier, but it can also be broken down into the perfect rocket fuels: hydrogen and oxygen.
The more Planetary Resources starts a gold rush, the more important water in space becomes. No wonder the company is already talking about building a chain of orbital and space-bound refueling stations. Ice from asteroids and comets could be the next oil industry.