By Mike Wall
Published February 13, 2013 / Space.com
The space rock set to give Earth a historically close shave this Friday, Feb. 15, may be worth nearly $200 billion, prospective asteroid miners say.
The 150-foot-wide asteroid 2012 DA14 — which will zoom within 17,200 miles of Earth on Friday, marking the closest approach by such a large space rock that astronomers have ever known about in advance — may harbor $65 billion of recoverable water and $130 billion in metals, say officials with celestial mining firm Deep Space Industries.
That's just a guess, they stressed, since 2012 DA14's composition is not well known and its size is an estimate based on the asteroid's brightness.
The company has no plans to go after 2012 DA14; the asteroid's orbit is highly tilted relative to Earth, making it too difficult to chase down. But the space rock's close flyby serves to illustrate the wealth of asteroid resources just waiting to be extracted and used, Deep Space officials said.
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