Researchers at the Caltech have directly determined the surface temperature of early Mars for the first time, providing evidence that's consistent with a warmer and wetter Martian past.

It was a science fiction fantasy come true: Ten years ago this summer, NASA announced the discovery of life on Mars. Scientists showed magnified pictures of a four-pound Martian meteorite riddled with wormy blobs that looked like bacterial colonies.

By MATT CRENSON Associated Press Ten years later, the NASA evidence has not been verified. It was a science fiction fantasy come true: Ten years ago this summer, NASA announced the discovery of life on Mars.

By MATT CRENSON Associated Press writer It was a science fiction fantasy come true: Ten years ago this summer, NASA announced the discovery of life on Mars.

By Matt Crenson Associated Press It was a science fiction fantasy come true: Ten years ago this summer, NASA announced the discovery of life on Mars.