Author: m1k3y

Few asteroids are worth mining, suggests Harvard study

He assumed that mining operations would want to focus on iron-nickel asteroids (known as M-type), considered the most promising targets for finding so-called platinum-group metals. These include platinum, along with iridium, palladium and others.

These are rare in the Earth’s crust because they dissolve in molten iron, instead being mainly concentrated in the planet’s core. Platinum and palladium are the most economically important, having a wide range of uses in industry. But according to the analysis, just 1% of near-Earth asteroids are rich in these elements.

Suitable asteroids also need to be relatively easy to reach, further narrowing the pool by ruling out all but the nearest objects to Earth. The operative parameter here is delta-v – the change in velocity needed to send mining equipment to the target and return with a larger mass of ore.

The size of the target is also a factor; the paper suggests it wouldn’t be worth mining asteroids smaller than about 100m because the total value of the ore they would produce wouldn’t be enough to cover the costs of a space mission.

However, Dr Elvis points out that the ore values in his analysis range from a low of $800m to a high of $8.8bn.

Few asteroids are worth mining, suggests Harvard study

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Republic of the Moon – London

It’s four decades since humans walked on the Moon, but it now seems likely that we will return there this century – whether to mine for its minerals, as a ‘stepping stone’ to Mars, or simply to do scientific research. In a provocative pre-emptive action, a group of artists are declaring a Republic of the Moon here on Earth, to re-examine our relationship with our planet’s only natural satellite.

After two decades working with space dreamers from the European Space Agency to anarchist autonomous astronauts, The Arts Catalyst will transform Bargehouse into an Earth-based embassy for a Republic of the Moon, filled with artists’ fantastical imaginings. Presenting international artists including Liliane Lijn, Leonid Tishkov, Katie Paterson, Agnes Meyer Brandis, and WE COLONISED THE MOON, the exhibition combines personal encounters, DIY space plans, imaginary expeditions and new myths for the next space age.

Republic of the Moon – London

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mckelvie:

Cayce Pollard, the protagonist of Pattern Recognition (by William Gibson), after she’s had her hair cut in Japan. Hairstyle is, of course, modelled on Major Kusanagi.

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putthison:

“When I was young there were beatniks. Hippies. Punks. Gangsters. Now you’re a hacktivist. Which I would probably be if I was 20. Shuttin’ down MasterCard. But there’s no look to that lifestyle! Besides just wearing a bad outfit with bad posture. Has WikiLeaks caused a look? No! I’m mad about that. If your kid comes out of the bedroom and says he just shut down the government, it seems to me he should at least have an outfit for that.”

– John Waters on the sorry style of today’s rebels  (emphasis mine)

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