Ok I should have caught that. ;-)
But, the ‘scientist’ still concludes/presumes that the meteorites under study are definitively Martian ejecta.
It could be true. No doubt.
I still say that’s thin science to CONCLUDE those rocks ARE Martian surface ejecta.
I worked in the Life Sciences, not the planet sciences, so this is an honest question — do ‘scientists’ have lots of examples of ejecta from other planets?
Scientists on both sides of the debate (as to whether the sample contains evidence of past life on Mars) agree the rock in question came from Mars.
From NASA:
"The meteorite, called ALH84001, was found in 1984 in Allan Hills ice field, Antarctica, by an annual expedition of the National Science Foundation's Antarctic Meteorite Program. It was preserved for study in JSC's Meteorite Processing Laboratory and its possible Martian origin was not recognized until 1993. It is one of only 12 meteorites identified so far that match the unique Martian chemistry measured by the Viking spacecraft that landed on Mars in 1976. ALH84001 is by far the oldest of the 12 Martian meteorites, more than three times as old as any other.
Many of the team's findings were made possible only because of very recent technological advances in high- resolution scanning electron microscopy and laser mass spectrometry. Only a few years ago, many of the features that they report were undetectable. Although past studies of this meteorite and others of Martian origin failed to detect evidence of past life, they were generally performed using lower levels of magnification, without the benefit of the technology used in this research. The recent discovery of extremely small bacteria on Earth, called nanobacteria, prompted the team to perform this work at a much finer scale than past efforts. "