You wanna just end it here ? <| sep |> Hey I got a friend to help me out , thanks for the time dude ! <| sep |> The detector is a telescope a kilometre down . Like those special plates they like to put in the bottom of disused salt mines . They don ' t really measure for random bits of machinery . You ' re running a tiny bit of machinery in a hostile environment . And if an asteroid hits the earth , then the rest of these are pretty moot too , along with any form of magic detection technology developed in the future . That said , space is big . Really big . Mind bogglingly big . A tiny bit of metal sent hurtling out into the black on the right orbit ? Not going to be found unless someone is looking for it , even if the solar system is bubbling with human craft .