Where's the Mars-like planet now? Did it become Mars or was it absorbed into Earth?
Where's the Mars-like planet now? Did it become Mars or was it absorbed into Earth?Assuming the model is true, people working on it assume part of it became roughly half the Moon itself. The reason for the size of the impactor is that the impact would produce three general outcomes for the ejecta, which can be triaged: one, the stuff that escapes; the stuff that goes out and comes back down; and three, the very narrow band of just-right trajectories that result in material which stays in Earth orbit.