roswell was not visitors from outer space it was time travellers from the future attempting to reverse the takeover of the nazis who in their timeline took over the entire planet

the body can't handle time travel so it turns into the fetus grey alien version


when the aliens telepathically say ' we are you ' they are referring to the fact they are from the future timeline

the thing is you can't go back in time and then return to your original time. you can go back but not forward basically... but once going back a split reality is created.. so there you have it