3 ms·If a alien UFO can cross the galaxy, why can’t they cruise above the earths surface without crashing?by emadda 3y agoIf a alien UFO can cross the galaxy, why can’t they cruise above the earths surface without crashing?andy-x 3y agoObviously they come from a multiverse where there is no gravity.donclark 3y agoWho says that we or someone else didnt cause their crash?