Mexican astronomers running computer simulations believe that rocks blasted upward by the impact of giant meteorites hitting Earth at one time may have sailed past Jupiter and out of the solar system. The astronomers speculate that some of those rocks may have carried with them samples of Earth’s lifeforms to seed terrestrial life on Mars and the moons of Jupiter.
This is a companion discussion topic for the original entry at https://talkingpointsmemo.com/?p=106512