| Martian fossil? This microscopic shape was discovered within martian meteorite ALH84001, and could be a fossil of a simple martian organisms that lived 3.6 billion years ago. The rock itself was ejected from Mars 16 million years ago, and then after a long journey in space landed on Earth 13,000 years ago. Image Credit: D. McKay (NASA /JSC), K. Thomas-Keprta (Lockheed-Martin), R. Zare (Stanford), NASA. |
