Mars zircon meteorite records ancient water

Researchers have analyzed a Mars meteorite (discovered in Mali in 2022 and now studied in Science) that contains zircon crystals dated to about 4.1 billion years and mineral signatures consistent with alteration by subsurface water and an evolving atmosphere. The rock preserves a sequence from magma crystallization through later water–rock interaction, offering a rare, datable window into early Martian crustal and hydrologic history. — This changes how we understand Mars’ early habitability and informs priorities for future missions and public investment in planetary exploration.