A pinkish rock weighing 800 grams, picked up in the Sahara Desert in 2022, has been confirmed as a piece of Mars that left the planet more than 4.1 billion years ago, according to reporting by The Washington Post and other outlets. Researchers funded by NASA say the specimen preserves evidence of water on early Mars. The Washington Post describes it as one of the oldest Martian meteorites known.
The rock is called Teghaza 001, a name that appears in material published by NASA's Jet Propulsion Laboratory. The Times of India reports that the 2022 find has now been traced to Mars, and the BBC puts its age at roughly four billion years. LiveNOW from FOX quoted a description of the object as a "Rosetta Stone for Mars," framing it as a window into the Red Planet's earliest chapter.
The significance lies in the combination of age and chemistry. A sample this old, carrying signs of ancient water, offers a direct look at conditions on Mars shortly after its formation — a period otherwise known mainly from orbital and rover data. Because the meteorite was recovered on Earth and then analyzed in laboratories, it can be studied with instruments far more sensitive than those carried on spacecraft.
Details on the team behind the confirmation, the analytical methods used and where the findings were published were not included in the available reporting.
Watch for the peer-reviewed study and any follow-up work on the water signatures, which would clarify how much the sample can tell researchers about early Martian environments.