Mars's Hidden Magma Seas Could Have Built a Habitable Past

NASA's InSight seismic data reveal a deep crustal boundary on Mars formed by vast magma pools, suggesting the crust differentiated into mafic and ultramafic layers and implying interconnected, long-lived magmatic systems beneath the planet. This transcrustal magmatism could have reprocessed mantle material, releasing greenhouse gases and thickening the early atmosphere to sustain warmer conditions, potentially making Mars habitable in its past, while also hinting at near-surface mineral wealth.