* Astronomy

Blobrana · L

RE: Ivuna meteorite

Blobrana · L

Title: Extraterrestrial amino acids in Orgueil and Ivuna: Tracing the parent body of CI type carbonaceous chondrites
Author: Pascale Ehrenfreund, Daniel P. Glavin, Oliver Botta, George Cooper, and Jeffrey L. Bada

Amino acid analyses using HPLC of pristine interior pieces of the CI carbonaceous chondrites Orgueil and Ivuna have found that balanine, glycine, and g-amino-n-butyric acid (ABA) are the most abundant amino acids in these two meteorites, with concentrations ranging from '600 to 2,000 parts per billion (ppb). Other a-amino acids such as alanine,a-ABA,a-aminoisobutyric acid (AIB), and isovaline are present only in trace amounts (<200 ppb). Carbon isotopic measurements of b-alanine and glycine and the presence of racemic (D/L ~ 1) alanine and b-ABA in Orgueil suggest that these amino acids are extraterrestrial in origin. In comparison to the CM carbonaceous chondrites Murchison and Murray, the amino acid composition of the CIs is strikingly distinct, suggesting that these meteorites came from a different type of parent body, possibly an extinct comet, than did the CM carbonaceous chondrites.

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Blobrana · L

Ivuna is a carbonaceous chondrite that fell in Tanzania the evening of December 16, 1938. While multiple stones may have fallen, only one 705 g piece was ever recovered.
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Blobrana · L

Carbonaceous chondrites or C chondrites are a class of chondritic meteorites comprising at least 7 known groups and many ungrouped meteorites. They include some of the most primitive known meteorites. C chondrites represent only a small proportion (4.6%) of meteorite falls.
Some famous carbonaceous chondrites are: Allende, Murchison, Orgueil, Ivuna, Murray, Tagish Lake, and Sutter's Mill
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Blobrana · L

The Ivuna (CI1) meteorite fell in Mbeya, Tanzania, on the 16th December, 1938.
A total mass of 705 g was recovered.

8° 25'S, 32° 26'E

Blobrana · L

A rare meteorite that could hold clues to the Solar System's birth has been bought by the Natural History Museum.
Dr Caroline Smith explained the significance of the Ivuna meteorite.

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Blobrana · L

A Tanzanian renowned physicist cum astronomer, Dr Noorali Jiwaji has challenged the government to work out modalities for scientific study of a rare type of meteorite which scientists say landed in Tanzania in 1938.

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Blobrana · L

British Airways this week carried one of its most unusual and possibly most valuable passengers a rare meteorite that could help scientists unravel the secrets of the solar system.
The meteorite, called Ivuna, was transferred to London's Natural History Museum from a private collection in the United States.

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Blobrana · L

A rare type of meteorite that could hold clues to the birth of our Solar System has been bought by London's Natural History Museum.
The Ivuna meteorite, obtained from a US private collection, has the same chemical make-up from which the Solar System formed 4.5 billion years ago.

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Blobrana · L

Meteorite may reveal solar system's birth
The little meteorite, known as Ivuna, has been transferred to the museum from a private collection in the US. It fell in Tanzania in 1938.

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