Feeds

Belgian boffins find colossal meteorite

18kg rock is largest Antarctic meteorite find since 1988

The smart choice: opportunity from uncertainty

Belgian meteorite hunters scooting about Antarctica on skidoos have described what they say is the largest meteorite find on the frozen continent since 1988.

Geologist Vinciane Debaille of the Université Libre de Bruxelles told the International Polar Foundation that she and her colleagues on an international meteorite-hunting team searched the Nansen Ice Field at an altitude of 2,900m, 140km south of  Princess Elisabeth Antarctica.

As is customary for polar meteorite hunts, the ten-strong team boarded skidoos and adopted “a V-shape, with the field guide in front of the V. We let 20 to 50 m between each participant, depending of the visibility and the potential dangers on the field, such as crevasse zones. Once someone finds a meteorite, he/she warns the others by radio, and the closest one comes to help by taking GPS position or pictures of the meteorites. Then, everybody retakes his/her place in the V-shape.”

On 28 January this method yielded 425 meteorites totalling 75kgs, with the prize being the 18kg whopper that Debaille put into perspective with this quote on what a meteorite-hunter expects to find:

“Per year, around 1,000 meteorites weighing less than 100g are found, and about 100 less than 1kg. So 1Kg is already special, never mind 18KG.”

The rock is a type known as a “chondrite”, the most common type of meteorite and of interest to science because they are not part of a larger body.

The specimen's large size presents several problems, one of which was that its finders didn't have a receptacle in which to place it. Touching with human hands is a no-no, lest it be contaminated.

“There are people studying the biological markers and organic, and we don’t add some more from us humans. So we try not to touch them,” Debaille said. “It’s easy when they’re small, you have a zip bag and you scoop them up. But when you have this large specimen and you think ok, I have to put it in a bag without touching it, and it was quite a challenge. Luckily our Japanese colleagues were well equipped, with a big bag that was large enough!”

Debaille also says “The meteorite is currently undergoing a special thawing process in Japan – to ensure water doesn’t get inside the rock.”

Debaille says another of the expedition's finds comes from the Asteroid Vesta, a deduction she is confident of because “We can measure what’s going on space, the spectral signature of the asteroid Vesta is the same as meteorites we find at earth, using measurements of reflected light. What is reflected is depended on the element on the asteroid, so we know the chemical composition of the Asteroid.  When we have the meteorite we can see that it has the same chemical signature, so we know there’s a good chance it came from the same asteroid.”

Another find has a good chance of being a fragment of Mars.

The 18kg rock is destined to become a museum exhibit, once scientists have finished with it. ®

Eight steps to building an HP BladeSystem

More from The Register

next story
Malaysian Airlines flight MH17 claimed lives of HIV/AIDS cure scientists
Researchers, advocates, health workers among those on shot-down plane
Mwa-ha-ha-ha! Eccentric billionaire Musk gets his PRIVATE SPACEPORT
In the Lone Star State, perhaps appropriately enough
The Sun took a day off last week and made NO sunspots
Someone needs to get that lazy star cooking again before things get cold around here
Diary note: Pluto's close-up is a year from … now!
New Horizons is less than a year from the dwarf planet
Boffins discuss AI space program at hush-hush IARPA confab
IBM, MIT, plenty of others invited to fill Uncle Sam's spy toolchest, but where's Google?
Microsoft's anti-bug breakthrough: Wire devs to BRAIN SCANNERS
Clippy: It looks your hands are shaking, are you sure you want to commit this code?
prev story

Whitepapers

Seven Steps to Software Security
Seven practical steps you can begin to take today to secure your applications and prevent the damages a successful cyber-attack can cause.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.