Poplar?@lemmy.world to 196@lemmy.blahaj.zoneEnglish · 1 day agoStay rulelemmy.worldimagemessage-square77linkfedilinkarrow-up1804arrow-down115
arrow-up1789arrow-down1imageStay rulelemmy.worldPoplar?@lemmy.world to 196@lemmy.blahaj.zoneEnglish · 1 day agomessage-square77linkfedilink
minus-squarestebo@lemmy.dbzer0.comlinkfedilinkEnglisharrow-up3·18 hours agoi mean if we were to communicate with aliens in another galaxy it would be the “least arbitrary” one
minus-squareSmoothOperator@lemmy.worldlinkfedilinkEnglisharrow-up1·edit-214 hours agoWouldn’t the conversations go like this? Me: I’m about 2/3rds out the longest arm of my galaxy Alien: OK vs Me: I’m at the place where the CMBR is evenly redshifted in all directions. Alien: Huh, me too?
minus-squarestebo@lemmy.dbzer0.comlinkfedilinkEnglisharrow-up2·6 hours ago I’m at the place where the CMBR is evenly redshifted in all directions. that’s not a place that’s a frame of motion (i think) the only issue is it’s hard to define an origin for that frame, so yeah it’s not gonna be all that useful indeed
i mean if we were to communicate with aliens in another galaxy it would be the “least arbitrary” one
Wouldn’t the conversations go like this?
Me: I’m about 2/3rds out the longest arm of my galaxy
Alien: OK
vs
Me: I’m at the place where the CMBR is evenly redshifted in all directions.
Alien: Huh, me too?
that’s not a place that’s a frame of motion (i think)
the only issue is it’s hard to define an origin for that frame, so yeah it’s not gonna be all that useful indeed