@sundogplanets Those Starlink satellites are at an altitude of around 450 if I am not mistaken. Therefore they will definitely return from orbit after their service life has ended. Whilst falling down the debris will pollute the upper atmosphere. We just don't know what the effects are of tens of thousands of satellites burning up that high. The smoke it releases could have serious long term conveniences. @Nichol @Olson @julescelt01 @markmetz @river