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Closer to Deducing the Origin of the Moon

eldavojohn writes "A giant explosion on the sun in January of 2005 allowed SMART-1 (a European spacecraft orbiting the moon) to detect what elements the moon is made up of based on the X-rays from the sun's explosion. This allows scientists to speculate on the moon's origins while seeing data from all over the moon as opposed to the core samples we have collected and returned in the past. From the article: 'Scientists responsible for the D-CIXS instrument on SMART-1 are also announcing that they have detected aluminium, magnesium and silicon. "We have good maps of iron across the lunar surface. Now we can look forward to making maps of the other elements." said SMART-1's Principal Investigator.'"

5 of 265 comments (clear)

  1. Re:Valuable metals? by Tweekster · · Score: 5, Insightful

    Actually it is a break even proposition for gold. is at about 625 per ounce...16 ounces per pound, 10,000...the current cost per pound to send something into space ( i dont know what the cost to retrieve it per pound would be, to send it back though) I would assume it is less expensive to send back, time is not exactly a factor, or life support systems etc.

    It is difficult to calculate because I couldnt find much info on sending stuff back from the moon, I am willing to bet it is quite a bit cheaper. But the infrastructure on the moon etc ruins any math. It would be break even for gold to be sent into space...and retrieving it would probably be long term profitable. (providing you can find enough gold)

    Platinum is 1200 dollars per ounce making it much more possible, if sufficient quantities could be found.

    The cargo ship would probably be reasonably priced...no equipment on board, doesnt need to be very fast, just a computer control system and the rockets etc necessary to bring it back in. Could be an interesting proposition.

    --
    The phrase "more better" is acceptable English. suck it grammar Nazis
  2. Re:Valuable metals? by 'nother+poster · · Score: 5, Informative

    12 oz. per lb. Precious metals are mesured in troy oz, not avoirdupois.

  3. Vast Deposits by drewsup · · Score: 5, Funny

    Where are the vast deposits of cheese Grommit, the Cheeeeeeese!

  4. More Details by writerjosh · · Score: 5, Informative

    Here's a few more details about this Impact Theory:

    "The basic idea is this: about 4.45 billion years ago, a young planet Earth -- a mere 50 million years old at the time and not the solid object we know today-- experienced the largest impact event of its history. Another planetary body with roughly the mass of Mars had formed nearby with an orbit that placed it on a collision course with Earth. When young Earth and this rogue body collided, the energy involved was 100 million times larger than the much later event believed to have wiped out the dinosaurs. The early giant collision destroyed the rogue body, likely vaporized the upper layers of Earth's mantle, and ejected large amounts of debris into Earth orbit. Our Moon formed from this debris."

    Plus, this page has a really cool rendering of the Impact:
    http://starchild.gsfc.nasa.gov/docs/StarChild/ques tions/question38.html

  5. Re:Valuable metals? by kthejoker · · Score: 5, Insightful

    Would they actually have to ship it back?

    I mean, nobody has seen the gold in Fort Knox in years, but it's been traded around left and right. Plenty of people are willing to pay for pieces of paper saying they own some gold - why not just prove it's there, stake a claim on it, and then sell it here on Earth?

    We can have an entire imaginary Moon economy! Awesomeness++!