Scientists have discovered a 3 billion-year-old beach buried on Mars

By Aaron J. Cavosie, Senior lecturer, School of Earth and Planetary Sciences, Curtin University

In the 1970s, images from the NASA Mariner 9 orbiter revealed water-sculpted surfaces on Mars. This settled the once-controversial question of whether water ever rippled over the red planet.

Since then, more and more evidence has emerged that water once played a large role on our planetary neighbour.

For example, Martian meteorites record evidence for water back to 4.5 billion years ago. On the young side of the timescale,…

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