1996 – NASA announced the discovery of evidence of primitive life on Mars. The evidence came in the form of a meteorite that was found in Antarctica. The meteorite was believed to have come from Mars and contained a fossil.
Martian meteorite ALH84001, recovered in Antarctica. Some scientists have suggested that physical and chemical features in this meteorite provide evidence for microscopic fossil life on Mars. That interpretation remains controversial. Photo courtesy of JPL/CALTECH/NASA.