The map of Mars revealed 20 mysterious underground structures beneath sediment layers of a lost ocean, showcasing the planet's potential geological history.
Researchers from TU Delft and Utrecht University detected features denser than their surroundings, suggesting ancient meteor strikes or volcanic activity might have formed them.
Using satellite orbit deviations, the team mapped Mars' gravitational field, which was crucial for understanding mass distribution across the planet's subsurface.
The structures, covered by a thick, smooth layer of sediment, are remnants of Mars' wetter past when oceans and rivers shaped its landscape.
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