Sunday, March 30 2025 01:23 AEST

Ancient Hot Water on Mars Suggests A Habitable Past

New Curtin University-led research has uncovered what may be the oldest direct evidence of ancient hot water activity on Mars, revealing the planet may have been habitable at some point in its past.

The study analysed a 4.45 billion-year-old zircon grain from the famous Martian meteorite NWA7034, also known as Black Beauty, and found geochemical ‘fingerprints’ of water-rich fluids.

Through nano-scale imaging and spectroscopy, the team identified element patterns in this unique zircon, including iron, aluminium, yttrium and sodium. These elements were added as the zircon formed 4.45 billion years ago, suggesting water was present during early Martian magmatic activity.

A 2022 Curtin study of the same zircon grain found it had been ‘shocked’ by a meteorite impact, marking it as the first and only known shocked zircon from Mars. Catch my deep dive with Dr Cavosie on Talkin’ Science available now.

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