A mechanism by which this could happen: >A Martian meteorite is a rock that formed on Mars, was ejected from the planet by an impact event, and traversed inter

A mechanism by which this could happen: >A Martian meteorite is a rock that formed on Mars, was ejected from the planet by an impact event, and traversed interplanetary space before landing on Earth as a meteorite. https://en.wikipedia.org/wiki/Martian_meteorite https://en.wikipedia.org/wiki/Martian_meteorite