Apparently they discovered evidence of weapons of mass destruction and that life could have come from Mars. They also found two sites with radioactive elements left over from artificial nuclear detonations. Plus a great rift that could have been formed by some mega weapon that causes an electrical or plasma discharge that ripped a hole miles long across the surface of Mars. Sounds like our ancestors. Destroy a planet, escape to Earth. Repeat the process. Escape back to Mars. That might also explain why astronauts in space seem to naturally revert to a Martian day instead of an earth day in their body cycle with sleeping, etc.
None of this means anything until we discover Martian strip clubs. Supposedly humans living on Mars for a few generations would get very tall and skinny with large eyes. Can you imagine getting a lap dance from a Martian girl who is 9 feet tall, big eyes, and tiny arms? Weird.
Do they have Chackin Fangers on Mars?