Balerion6@lemmy.world to Showerthoughts@lemmy.worldEnglish · edit-23 days 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-up1235arrow-down130
arrow-up1205arrow-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-23 days agomessage-square68fedilink
minus-squarekryptonianCodeMonkey@lemmy.worldlinkfedilinkarrow-up3·2 days 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-up1·2 days 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