Ancient Martian Meteorite Reveals Hidden Water Locked Inside for Billions of Years

Hidden Water in a Rock From Mars

A team of researchers led by Estrid Buhl Naver at the Technical University of Denmark has uncovered previously unknown water-bearing minerals inside one of the most celebrated Martian meteorites ever found on Earth. The meteorite, officially catalogued as NWA 7034 but nicknamed Black Beauty, was discovered by nomads in Morocco's Sahara Desert in 2011 and is composed of material dating back approximately 4.48 billion years.

Scanning Without Destroying

Using a combination of neutron and X-ray computed tomography, the team peered inside the meteorite without cutting, crushing, or dissolving any of it. They identified hydrogen-rich iron oxyhydroxide clasts that make up roughly 0.4 percent of the sample's volume but contain approximately 11 percent of its total water content. Black Beauty overall holds an estimated 6,000 parts per million of water, making it the most water-rich Martian meteorite ever analysed.

A Window Into Mars' Watery Past

The findings are particularly significant because they complement discoveries made by NASA's Perseverance rover at Jezero crater. Despite originating from an entirely different location on Mars, the presence of hydrated iron oxyhydroxides in both the meteorite and Jezero samples suggests that near-surface water reservoirs were once widespread across the Red Planet.

A Bittersweet Moment for Planetary Science

The discovery arrives at a poignant time for Mars exploration. In January 2026, the United States Congress confirmed that NASA's Mars Sample Return mission would not receive funding, effectively ending the programme after its estimated cost ballooned to 11 billion dollars. The researchers had hoped to apply their non-destructive scanning techniques to samples collected by Perseverance, which remain sealed in titanium tubes on the Martian surface. China's Tianwen-3 mission, planned for launch around 2028 with samples returning to Earth by 2031, may eventually provide new Martian material to study.