Iron rich rocks near Mars' old maritime sites could provide important clues that life once existed, as research suggests.
These rocks, formed in ocean beds, are the best place to find fossil life testimonies (19659002) A new study that sheds light on where fossils could be obtained is known for finding traces of tiny creatures as microbes – support on Mars, which is believed to have supported primitive life forms about four billion years ago
A team of scientists has found that sedimentary rocks of compacted mud or clay are most likely to contain fossils. These rocks are rich in iron and a mineral called silica, which helps to preserve fossils.
They originated during the Noachic and Hesperian periods of Martian history three to four billion years ago. At that time, the surface of the planet was rich in water, which could have helped life.
The rocks are much better preserved than the same age on earth, researchers say. This is because Mars is not subject to plate tectonics ̵
The team reviewed fossil recordings on Earth and evaluated the results of laboratory experiments that replicate Martian conditions to identify the most promising locations on the planet, looking for traces of ancient life.
Their findings could help inform NASA's next rover mission on the Red Planet, which will focus on finding evidence of the past life. The US Space Agency's Mars 2020 rover will collect rock samples sent back to Earth from a future mission for analysis.
A similar mission of the European Space Agency is also planned in the coming years.
The latest study on Mars Rocks – led by a researcher from the University of Edinburgh – could help with the selection of landing sites for both missions. It could also help identify the best places to collect rock samples.
The study published in the Journal of Geophysical Research also included researchers from NASA's Jet Propulsion Laboratory, Brown University, the California Institute of Technology, the Massachusetts Institute of Technology, and Yale University in the US
Dr. Sean McMahon, a Marie Sklodowska-Curie fellow at the University of Edinburgh's School of Physics and Astronomy, said, "There are many interesting rock and mineral deposits on Mars where we would like to search for fossils, but we are not rovers to send to all, we have tried to prioritize the most promising deposits based on the best available information. "
University of Edinburgh
Countries beyond the hereafter – additional solar planets – News and Science  Life beyond Earth
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Scientists crack down on how primitive life on Earth replicates itself  London, United Kingdom (SPX) May 16, 2018
Scientists have created a new kind of genetic replication system that shows how the first life on Earth – in the form of RNA – could have replicated itself. Scientists from the Laboratory of Molecular Biology at the Medical Research Council (MRC) say the new RNA uses a system of genetic replication that no longer exists on Earth today.
A popular theory for the earliest stages of life on Earth is that it was founded on RNA strands, a chemical cousin of DNA. Like DNA, RNA s … read more