Scientists Identify 4.1-Billion-Year-Old Martian Meteorite

· Science · United States

Scientists at the University of New Mexico have played a key role in identifying a rare Martian meteorite dated at 4.1 billion years old, which offers new evidence that Mars may once have had a wetter, Earth-like environment. The rock is among the oldest known samples linked to the red planet, and its age places it in an early stretch of Martian history when conditions may have been far more hospitable than today. The finding adds to the growing body of evidence, built largely from meteorites and rover data, that liquid water was present on early Mars. The identification gives researchers another rare window into the planet's ancient past.

Why it matters：Ancient Martian samples are among the few direct probes of whether the planet once supported water and habitable conditions, a question driving planetary science and future missions.

Key points

  • The meteorite is dated to 4.1 billion years ago.
  • It adds evidence that early Mars was wetter and more Earth-like.
  • University of New Mexico scientists contributed to the identification.

Sources (original reporting)

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