This culture's home world was located between Mars and Jupiter, and in their ongoing civil war against each other, they wrought great damage on Mars, which used to be a far more temperate, colonized Earthlike planet before its atmosphere was destroyed in the same conflict that also utterly destroyed their home planet, its remains eventually becoming the asteroid belt. This last act was apparently a threshold event of some kind that caused the culture to lay down their arms, possibly out of shame or out of fear of some kind of reprisal. As a result, they put themselves and their technology in suspended animation deep within Europa's ocean. One of the Cold Harbor scientists suggests that this was motivated chiefly by their inability to live with themselves. However, before doing so, the culture seeded Earth with the genetic material that allowed human life to grow.