Adam, contained within the White Moon, was the first Seed to land on Earth, at least 4 billion years ago. Before Adam-based life could be established, Lilith crash-landed on Earth within the Black Moon, the collision causing the event now known as the First Impact and separating Lilith from its own Spear (possibly destroying it, but the truth is unknown) in the process. Due to an unspecified law in the First Ancestral Race's plan, two Seeds are not meant to co-exist on the same planet, and it is implied that Adam's Spear -- as the only one remaining in proximity to a Seed, or on the planet at all -- took the initiative to subdue its own counterpart Seed. Adam remained in suspended animation for billions of years while Lilith-based life was allowed to develop and prosper. In the year 2000, the Katsuragi Expedition unearthed Adam and the Spear in the Antarctic. The Spear was removed, briefly relocated to the Dead Sea region, and then shipped back to the South Pole in preparation for the Contact Experiment. After the experiment led to unforeseen consequences, the team attempted to wield the Spear against Adam to "reseal" it, but they failed. In classified video footage of the incident, scientists can be heard shouting off-screen that the Spear needs to be "pulled back," and that it's "sinking in." Second Impact could not be averted, and, ultimately, the Spear appears to be responsible for causing Adam's retroversion to an embryonic state.