Moon mining looks to uncover hidden gems

BRIDIE SMITH
Last updated 10:20 21/02/2013
The mine on the moon
Nasa

SAY CHEESE: Unlocking the moon for mineral exploration is closer to science fact than science fiction.

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Unlocking the moon for mineral exploration is closer to science fact than science fiction.

As local and international researchers gather in Sydney for Australia's first off-Earth mining conference this week, it wasn't just the usual logistical and economic challenges that were discussed.

Senior project engineer Gordon Roesler, from the University of New South Wales' Australian centre for space engineering research, said advances in robotics in particular meant investors, entrepreneurs and research institutions were taking off-Earth mining more seriously.

"Just look what has been achieved in the last 20 years," he said. "In the last year alone, there has been two companies formed, one in the US and one in the UK, which are backed by millionaires whose goals are to go and mine asteroids."

Nasa's Curiosity mission, which landed an 899-kilogram rover on Mars last August, and Japan's successful sampling of an asteroid 300 million kilometres away using robotics in 2010, are other standout examples.

A geologist, Mars Society Australia president, Dr Jonathan Clarke, said Mars and the moon were the next frontier, with water likely the first target.

"For both the moon and Mars, we are going to be looking at mining water because water can be used as a propellant for space craft, oxygen for breathing and water for washing," he said.

"That can totally transform the financial viability of even a small scientific station."

Dr Roesler agreed, describing the ability to turn water into a propellant as turning Mars or the moon into a space petrol station.

"So rather than have to launch all our propellants from the Earth which is very expensive, we can stop off at the petrol station," he said.

Mineral mapping by NASA has shown the moon is geologically diverse, with a range of minerals present including those which are considered "rare Earth minerals".

Among them are yttrium, lanthanum and samarium. These are increasingly critical in the making of high-tech products for civilian and military use: be it tablets, missiles or wind turbines.

"These are minerals that we use for all sorts of things but particularly plasma screens and advanced ceramics used in engines, electronics and machinery," Dr Clarke said.

Titanium occurs in some lunar rocks at 100-times the rate as rocks on Earth. The mineral is efficient at retaining solar wind particles such as helium and hydrogen - vital gasses in construction of lunar colonies and exploration.

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