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Showing posts with label Moon Rocks. Show all posts
Showing posts with label Moon Rocks. Show all posts

Friday, August 28, 2009

'Moon Rock' in Dutch Museum Is Just Petrified Wood

Conspiracy theorists rejoice: Prized 'moon rock' in Dutch national museum is a fake

By TOBY STERLING

The Associated Press

AMSTERDAM

It's not green cheese, but it might as well be.

The Dutch national museum said Thursday that one of its prized possessions, a rock supposedly brought back from the moon by U.S. astronauts, is just a piece of petrified wood.

Rijksmuseum spokeswoman Xandra van Gelder, who oversaw the investigation that proved the piece was a fake, said the museum will keep it anyway as a curiosity.

"It's a good story, with some questions that are still unanswered," she said. "We can laugh about it."

The museum acquired the rock after the death of former Prime Minister Willem Drees in 1988. Drees received it as a private gift on Oct. 9, 1969 from then-U.S. ambassador J. William Middendorf during a visit by the three Apollo 11 astronauts, part of their "Giant Leap" goodwill tour after the first moon landing.

Middendorf, who lives in Rhode Island, told Dutch broadcaster NOS news that he had gotten it from the U.S. State Department, but couldn't recall the exact details.

In this photo released by the Rijksmuseum in Amsterdam on Thursday, Aug. 27, 2009, a rock supposedly brought back from the moon, and a note from the then-U.S. ambassador is seen. The Dutch national museum says one of its prized possessions, a rock supposedly brought back from the moon by U.S. astronauts, is just a piece of petrified wood. The museum acquired the rock after the death of a former prime minister, who received it in 1969 from the then-U.S. ambassador during a visit by the Apollo 11 astronauts. (AP Photo/Rijksmuseum)

"I do remember that (Drees) was very interested in the little piece of stone," the NOS quoted Middendorf as saying. "But that it's not real, I don't know anything about that."

He could not immediately be reached for comment Thursday.

The U.S. Embassy in the Hague said it was investigating the matter.

The museum had vetted the moon rock with a phone call to NASA, Van Gelder said.

She said the space agency told the museum then that it was possible the Netherlands had received a rock: NASA gave moon rocks to more than 100 countries in the early 1970s, but those were from later missions.

"Apparently no one thought to doubt it, since it came from the prime minister's collection," Van Gelder said.

The rock is not usually on display; the museum is primarily known for its paintings and other works of fine art by masters such as Rembrandt.

A jagged fist-size stone with reddish tints, it was mounted and placed above a plaque that said, "With the compliments of the Ambassador of the United States of America ... to commemorate the visit to The Netherlands of the Apollo-11 astronauts." The plaque does not specify that the rock came from the moon's surface

It was given at the opening of an exhibition on space exploration.

It was on show in 2006 and a space expert informed the museum it was unlikely NASA would have given away any moon rocks three months after Apollo returned to Earth.

Researchers from Amsterdam's Free University said they could see at a glance the rock was probably not from the moon. They followed the initial appraisal up with extensive testing.

"It's a nondescript, pretty-much-worthless stone," Geologist Frank Beunk concluded in an article published by the museum.

He said the rock, which the museum at one point insured for more than half a million dollars, was worth no more than euro50 ($70).

Van Gelder said one important unanswered question is why Drees was given the stone. He was 83 years old in 1969 and had been out of office for 11 years. On the other hand, he was the country's elder statesman, the prime minister who helped the Netherlands rebuild after World War II.

Middendorf was treasurer of the Republic National Committee from 1965 until 1969, when President Richard Nixon dispatched him to the Netherlands.

Friday, August 14, 2009

Scientists Make Oxygen Out of Moon Rock

by Lisa Zyga moon rock

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Scientists have developed a method to produce oxygen from moon rock. Image credit: NASA.

(PhysOrg.com) -- If humans ever create a lunar base, one of the biggest challenges will be figuring out how to breathe. Transporting oxygen to the moon is extremely expensive, so for the past several years NASA has been looking into other possibilities. One idea is extracting oxygen from moon rock.

Recently, Derek Fray, a materials chemist from the University of Cambridge, and his colleagues have built a reactor that uses oxides in Moon rocks as the cathode in an

to produce oxygen.

The design is based on a process that the researchers invented in 2000 that produces carbon dioxide. In this design, the scientists pass a current between the cathode and an anode made of carbon, with both electrodes sitting in an electrolyte solution of molten calcium chloride, a common salt. The current removes oxygen atoms from the cathode, which are then ionized and dissolve in the molten salt. The negatively charged oxygen is attracted to the carbon anode, where it erodes the anode and produces carbon dioxide.

To produce oxygen rather than , the researchers made an unreactive anode using a mixture of calcium titanate and calcium ruthenate instead of the carbon. Because this anode barely erodes, the reaction between the oxygen ions and anode produces oxygen.

Based on experiments with a simulated lunar rock developed by NASA, the researchers calculate that three one-meter-tall reactors could generate one tonne of oxygen per year on the Moon. Each tonne of oxygen would require three tonnes of rock to produce. Fray noted that three reactors would require about 4.5 kilowatts of power, which could be supplied by solar panels or possibly a small on the Moon. The researchers are also working with the on developing an even larger reactor that could be operated remotely.

As a recent story in Nature News reports, other researchers are also developing methods for oxygen extraction. For instance, Donald Sadoway at MIT is working on a high-temperature technique called molten salt electrolysis. Here, the Moon rock is molten and acts as the electrolyte itself. Sadoway's reactor could even be built out of the rubble on the Moon's surface called regolith.

NASA and the ESA are strongly encouraging this type of research. In 2008, NASA boosted its $250,000 prize to $1 million for the first team to demonstrate a method to extract five kilograms of in eight hours from simulated Moon rock. So far, the prize remains unclaimed.

via: Nature News

© 2009 PhysOrg.com