Meteorite Found in Sahara is Piece of Mars at Least 4.1 Billion Years Old

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1. 1h ago

   Sahara Meteorite Dated to 4.1 Billion Years Ago

   A reddish igneous space rock discovered in the Sahara Desert in 2022 has been determined by scientists to be at least 4.1 billion years old and of Martian origin. Named Teghaza 001, the 800-gram meteorite formed in the Martian crust during the foundational era of the solar system. Researchers describe the specimen as a critical sample that offers rare insight into the ancient crust of Mars and its early watery environment. The meteorite is among roughly 435 Martian space rocks identified on Earth and ranks as one of the oldest samples of the Red Planet ever discovered.

   Why it matters

   The discovery provides a direct physical window into a time when water was actively flowing on the surface of Mars. Analyzing the ancient minerals helps scientists understand how the Martian environment shifted from a wet, potentially habitable world into a dry planet. Researchers compare the specimen to a foundational Rosetta Stone for unlocking the secret history of the Red Planet.

   What is confirmed

   • A meteorite found in 2022 in the Sahara salt plain in Mali formed in the Martian crust at least 4.1 billion years ago.
   • The reddish igneous rock is named Teghaza 001 and weighs 800 grams.
   • Teghaza 001 is among roughly 435 Martian meteorites identified on Earth and stands as one of the oldest samples of the Red Planet found so far.

   What to watch next

   • Further laboratory analysis of Teghaza 001 mineral compositions to reveal more details about early Martian water and crustal evolution.
   Sources used for this update (17)

   1. www.nasa.gov — NASA
   2. www.gmanetwork.com — Martian meteorite found in the Sahara is 4.1 billion years old
   3. Sci.News — Meteorite Found in Sahara is Piece of Mars at Least 4.1 Billion Years Old
   4. The New York Times — A Meteorite Found in the Sahara Is a 4.1-Billion-Year-Old Piece of Mars
   5. NASA Science (.gov) — Slice of Martian Meteorite Teghaza 001
   6. Mashable — Scientists date Martian meteorite to foundational era of solar system
   7. Scientific American — The oldest known piece of Mars may help solve mysteries of life on Earth
   8. Ars Technica — Rare meteorite from Mars gives us a view into its ancient crust
   9. Reuters — Martian meteorite found in the Sahara is 4.1 billion years old
   10. The Washington Post — Scientists have what they say is one of the oldest Mars meteorites
   11. www.cbsnews.com — Rose-colored meteorite found in the Sahara Desert turns out ...
   12. www.nytimes.com — A Meteorite Found in the Sahara Is a 4.1-Billion-Year-Old ...
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