# Is this news report accurate?

russ_watters
Mentor
Sounds reasonable to me.

Really? There's really that much in proven resources just sitting there on one asteroid? Whoa........

russ_watters
Mentor
Well, it's a really big rock!

Well yeah but the Earth is a bigger rock. :P

I'm kind of surprised no one has come up with a solid plan to go there, $20 trillion should be more than enough return to justify investing in space, hence my initial disbelief at the accuracy of that figure. russ_watters Mentor Well yeah but the Earth is a bigger rock. :P Yes, and of course the Earth has much more!  Misread the quantity in the article..... Here's a link with a chart showing estimated reserves of a bunch of metals. They seem a little low based on what I've seen elsewhere, but it at least is a good order of magnitude and all in one place: http://www.24hgold.com/english/news...ewitt&article=1427726620G10020&redirect=False It looks like there is more of the precious metals there, though less of the less precious such as aluminum. [edit2] Note also, the Earth's reserves noted above are the relatively easily recoverable reserves, not the toal amount on earth. The calculation for Eros is the total amount. I'm kind of surprised no one has come up with a solid plan to go there,$20 trillion should be more than enough return to justify investing in space, hence my initial disbelief at the accuracy of that figure.
The problem is getting the stuff back. Even if there were solid platinum rocks floating around in low earth orbit, it wouldn't be cost effective to bring them back to earth.

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Closer to home - there's 10-20 Million tons of gold in the Earth's oceans.