Study: Crystals Prove Life on Mars AP

A crystal found in a meteorite from Mars could only have been formed by a microbe and may be evidence of the oldest life form ever found, researchers say. Scientists at the Johnson Space Center in Houston say that a crystalized magnetic mineral, called magnetite, found in a Martian meteorite is similar to crystals formed on Earth by bacteria. “I am convinced that this is supporting evidence for the presence of ancient life on Mars,” said Kathie Thomas-Keprta, an astrobiologist at the space center and the first author of a study appearing Tuesday in the Proceedings of the National Academy of Sciences. Thomas-Keprta said there is no report of such magnetites being formed by any but biologic means.