"We found that, in addition to frequent transfer of material among the terrestrial planets, transfer of material from Earth and Mars to the moons of Jupiter and Saturn is also possible, but rare," write the researchers, headed by astrobiology graduate student Rachel Worth, of Penn State University.
"We find that rock capable of carrying life has likely transferred from both Earth and Mars to all of the terrestrial planets in the solar system and Jupiter," Worth told BBC News.
This is a fascinating field of study, one that will likely spur even more heated debates as to the origin of life and whether it is ubiquitous throughout the galaxy.
"Any missions to search for life on Titan or the moons of Jupiter will have to consider whether biological material is of independent origin, or another branch in Earth's family tree," Worth added.
ANALYSIS: It's OK, Infect Mars With Our Germs
In their simulation, the researchers revealed that around 26,000,000 chunks of Earth material, over 3 meters wide, has likely made it to Venus. Three meters is the minimum diameter of rock, according to the researchers, that would have given enough shielding to the biology contained within against the space radiation environment to survive the interplanetary voyage. 730,000 pieces would have made it to Mercury, 360,000 to Mars, 83,000 to Jupiter and 14,000 to Saturn. Also, they found that 10 Earth meteorites would have impacted Io, 6 would have landed on Europa, 4 on Titan and 1 on Callisto.