4-billion-year-old 'Rosetta Stone' found in Sahara Desert could unlock the secret history of water on Mars
November 7, 2026
A rose-colored rock discovered in the Sahara Desert may hold some clues to Mars’ ancient geological history.
The meteorite, named Teghaza 001 after the salt plain in Mali where it was discovered in 2022, weighs roughly 1.8 pounds (800 grams) and formed more than 4.1 billion years ago. Blasted off Mars by an impact before eventually landing on Earth, it is one of the three oldest Martian…