Balerion6@lemmy.world to Showerthoughts@lemmy.worldEnglish · edit-21 day agoTime travel doesn't work unless you also have teleportation. If you travel to the past/future, Earth will be in a different position in its orbit, and you'll die in space.message-squaremessage-square68fedilinkarrow-up1230arrow-down131
arrow-up1199arrow-down1message-squareTime travel doesn't work unless you also have teleportation. If you travel to the past/future, Earth will be in a different position in its orbit, and you'll die in space.Balerion6@lemmy.world to Showerthoughts@lemmy.worldEnglish · edit-21 day agomessage-square68fedilink
minus-squarekryptonianCodeMonkey@lemmy.worldlinkfedilinkarrow-up3·23 hours agoThe microwave background is like a rainbow. When you move, it appears to move. You’re always at the “center” of it.
minus-squarefubbernuckin@lemmy.dbzer0.comlinkfedilinkEnglisharrow-up1·22 hours agoYou can measure the Doppler shift relative to the cosmic microwave background though
The microwave background is like a rainbow. When you move, it appears to move. You’re always at the “center” of it.
You can measure the Doppler shift relative to the cosmic microwave background though