Don_Dickle@lemmy.world to Ask Science@lemmy.worldEnglish · 2 days agoIf Aliens arrive with their tech to traverse world wouldn't our weapons pretty much look like sticks and stones to them? Also how do we not catch a disease from them or vice versa?message-squaremessage-square18fedilinkarrow-up134arrow-down19
arrow-up125arrow-down1message-squareIf Aliens arrive with their tech to traverse world wouldn't our weapons pretty much look like sticks and stones to them? Also how do we not catch a disease from them or vice versa?Don_Dickle@lemmy.world to Ask Science@lemmy.worldEnglish · 2 days agomessage-square18fedilink
minus-squaresuperkretlinkfedilinkEnglisharrow-up9·2 days agoIf it burns up in the atmosphere with relativistic speed, it burns up the atmosphere.
minus-squareCanadaPlus@lemmy.sdf.orglinkfedilinkEnglisharrow-up2·24 hours agoTrue, but damage still depends on craft size. At the really small end you’re basically just talking about a normal cosmic ray.
minus-squareQuadratureSurfer@lemmy.worldlinkfedilinkEnglisharrow-up4·1 day agoRelevant xkcd video: https://www.youtube.com/watch?v=3EI08o-IGYk
If it burns up in the atmosphere with relativistic speed, it burns up the atmosphere.
True, but damage still depends on craft size. At the really small end you’re basically just talking about a normal cosmic ray.
Relevant xkcd video: https://www.youtube.com/watch?v=3EI08o-IGYk