Poplar?@lemmy.world to 196@lemmy.blahaj.zoneEnglish · 2 days agoStay rulelemmy.worldimagemessage-square79fedilinkarrow-up1852arrow-down115
arrow-up1837arrow-down1imageStay rulelemmy.worldPoplar?@lemmy.world to 196@lemmy.blahaj.zoneEnglish · 2 days agomessage-square79fedilink
minus-squarestebo@lemmy.dbzer0.comlinkfedilinkEnglisharrow-up4·2 days agoi mean if we were to communicate with aliens in another galaxy it would be the “least arbitrary” one
minus-squareSmoothOperator@lemmy.worldlinkfedilinkEnglisharrow-up2·edit-22 days 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-up3·1 day 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