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Curtin Uni’s ML Algorithm Traces Famous Martian Rock

Image Credit: NASA

New Curtin-led research has pinpointed the exact home of the oldest and most famous Martian meteorite for the first time ever, offering critical geological clues about the earliest origins of Mars.

Using a multidisciplinary approach involving a machine learning algorithm, the new research – published today in Nature Communications – identified the crater on Mars that ejected the so-called ‘Black Beauty’ meteorite, weighing 320 grams, and paired stones, which were first reportedly found in northern Africa in 2011. The researchers have named the specific Mars crater after the Pilbara city of Karratha, located more than 1500km north of Perth in Western Australia, which is home to one of the oldest terrestrial rocks.

The discovery was made using an algorithm that was developed in-house at Curtin by an interdisciplinary group that included members from the Curtin Institute for Computation and the School of Civil and Mechanical Engineering, as well as the Pawsey Supercomputing Research Centre and the Australian Space Data Analysis Facility, with funding from the Australian Research Council.

Using one of the fastest supercomputers in the Southern Hemisphere at the Pawsey Supercomputing Research Centre, and the Curtin HIVE (Hub for Immersive Visualisation and eResearch), researchers analysed a massive volume of high-resolution planetary images through a machine learning algorithm to detect impact craters.

The paper’s lead author Dr Anthony Lagain, from Curtin’s Space Science and Technology Centre in the School of Earth and Planetary Sciences, said the exciting discovery offered never-before-known details about the Martian meteorite NWA 7034, known as ‘Black Beauty’, which is widely studied across the globe. Black Beauty is the only brecciated Martian sample available on Earth, meaning it contains angular fragments of multiple rock types cemented together which is different from all other Martian meteorites that contain single rock types.

For the first time, the geological context of the only brecciated Martian sample available on Earth is now known, 10 years before NASA’s Mars Sample Return mission is set to send back samples collected by the Perseverance rover currently exploring the Jezero crater, Dr Lagain said.

The researcher noted that identifying the originating area of the ‘Black Beauty’ meteorite is crucial as it contains the oldest Martian fragments ever found, aged at 4.48 billion years old, and it shows similarities between Mars’ very old crust, aged about 4.53 billion years old, and today’s Earth continents. The region the team identified as being the source of this unique Martian meteorite sample constitutes a true window into the earliest environment of the planets, including the Earth, which our planet lost because of plate tectonics and erosion.

Co-author Professor Gretchen Benedix, also from Curtin’s Space Science and Technology Centre in the School of Earth and Planetary Sciences, said this research paved the way to locate the ejection site of other Martian meteorites, to create the most exhaustive view of the Red Planet’s geological history.

The team is also modifying the algorithm that was used to pinpoint Black Beauty’s point of ejection from Mars to unlock other secrets from the Moon and Mercury. It is hoped that this will help determine their geological history and answer burning questions that will help future investigations of the Solar System such as the Artemis program to send humans on the Moon by the end of the decade or the BepiColombo mission, in orbit around Mercury in 2025.

The research also involved experts from Paris-Saclay University, Paris Observatory, Muséum National d’Histoire Naturelle, the French National Centre for Scientific Research, the Félix Houphouët-Boigny University on the Ivory Coast and Northern Arizona University and Rutgers University in the United States of America.


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