NASA’s Curiosity rover has found strong evidence that ancient Mars may have supported life. During a drill into the Martian surface, the rover discovered carbon residues in rocks over 3.5 billion years old. This supports the theory that Mars once had a stable carbon cycle, hinting at a habitable environment.
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- Carbon found on Mars hints life may have existed.
- Curiosity rover drilled Martian crust 3–4 cm deep.
- Discovered siderite in ancient rock layers.
- Rocks are around 3.5 billion years old.
- Carbon suggests long-lost carbon cycle once active.
- Supports theory Mars had warm, wet past.
- Martian climate later shifted to dry, cold.
- Known as the “great drying” period.
- Discovery boosts search for extraterrestrial life.
- NASA continues exploring ancient Martian geology.




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