● Covered by 1 source · 1 reportMedium impact1 neutral
New Martian Meteorite Teghaza 001 Discovered, Formed 4.1 Billion Years Ago
Key points
- Teghaza 001 meteorite found in Mali in 2022.
- Formed at least 4.1 billion years ago.
- Third ancient Martian meteorite known on Earth.
- Provides data on Mars' ancient crust.
Discovery of Teghaza 001
A team led by Yang Liu, a planetary scientist at NASA’s Jet Propulsion Laboratory, confirmed that the Martian meteorite Teghaza 001, discovered in the Sahara Desert in Mali in 2022, formed at least 4.1 billion years ago. This makes it one of the oldest known Martian rocks on Earth, comparable in age to some of Earth's oldest rocks.
Rarity of Ancient Martian Meteorites
Most Martian meteorites found on Earth are 2.4 billion years old or younger, with only two previously identified as genuinely ancient: Allan Hills 84001 and Black Beauty. The scarcity of older Martian rocks is partly attributed to the process of ejection from Mars, which favors stronger rocks that can withstand the impact and journey to Earth. Teghaza 001 is significant because it is a single, intact igneous rock, unlike Black Beauty which is a mix of fragments.
Implications for Martian Geology
The discovery of Teghaza 001 provides a direct sample of Mars' ancient crust, which is estimated to be over 3 billion years old based on crater counts. This meteorite offers a rare opportunity to study the early geological history of Mars, as the existing collection of Martian meteorites does not fully represent the surface compositions observed by orbital measurements.
✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →
The daily brief
One email each morning: the day's tech stories, clustered across outlets and summarized. No account needed.
One email a day. Unsubscribe in one click, any time.
Today's brief
Spend a few minutes, get the whole day. Every topic's top stories in one hands-free rundown — listen, watch, or read the transcript.
▶ Play today's brief
New every morning, and the back catalogue is archived by date.
Reporting from
Scientists identified Teghaza 001, a Martian meteorite found in Mali, as forming at least 4.1 billion years ago. This discovery adds a third genuinely ancient Martian meteorite to Earth's collection, offering insights into Mars' early crust.