spacetoday.net: space news from around the webin association with SpaceNews


Researchers claim some ALH84001 magnetite formed by bacteria
Posted: Mon, Aug 5, 2002, 8:38 AM ET (1238 GMT)
Magnetite chain found in ALH84001 A team of scientists has published evidence that one quarter of the magnetite found in Martian meteorite ALH84001 could only have been created organically, the latest claim in the debate over whether the meteorite contains evidence of past Martian life. The study, led by NASA JSC scientist Kathie Thomas-Keprta and published in the journal Applied and Environmental Microbiology, found that 25 percent of the magnetite found in the meteorite had "remarkable physical and chemical similarities" to magnetite created by bacteria on Earth. A comprehensive study confirmed that the magnetite matched a Magnetite Assay for Biogenicity (MAB) used to determine if terrestrial magnetite is formed by bacteria; no magnetite crystals formed inorganically have met the MAB criteria. The magnetite crystals were one of the lines of evidence put forward in the original announcement, almost exactly six years ago, that ALH84001 contains evidence of past Martian life. Other researchers have argued since then that the magnetite was most likely formed by inorganic processes.
Related Links:
<<previous article   next article>>
news in brief
China launches two navigation satellites
Posted: Sun, Jan 14 5:44 PM ET (2244 GMT)

Arianespace plans a record number of launches in 2018
Posted: Sun, Jan 14 5:43 PM ET (2243 GMT)

Orbital ATK wins Galaxy 30 order
Posted: Sun, Jan 14 5:42 PM ET (2242 GMT)

news links
Saturday, January 20
The new space race
The Economist — 9:47 am ET (1447 GMT)
No launch for Rocket Lab today
Hawke's Bay (NZ) Today — 9:44 am ET (1444 GMT)
Rocket Lab forced to abort launch again
NZCity — 9:43 am ET (1443 GMT)
Rocket Lab second test called off for today
Radio New Zealand — 9:43 am ET (1443 GMT)


about spacetoday.net   ·   info@spacetoday.net   ·   mailing list