An ancient meteor site in Germany is being studied to help scientists develop a better understanding of how past life could have existed on Mars. An international research team analysed samples from Nordlinger Ries, a 15-mile-wide impact crater in southern Germany.
The site’s geology and chemistry bear similarities to the Martian surface — in particular the Jezero crater north of the Martian equator. Both Jezero and Nordlinger Ries featured liquid water in their distant past, making their chemical compositions comparable. The Ries crater — in which a whole city was built over 1,000 years ago — has layers of rock and minerals better preserved than almost anywhere on Earth. Specifically, nitrogen isotopes in rock samples from the Ries crater are estimating the pH of ancient waters on Mars.
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