m3t00🌎 voted@lemmy.worldM to science@lemmy.worldEnglish · 4 months agoCan the James Webb Space Telescope see galaxies over the universe's horizon?www.space.comexternal-linkmessage-square10fedilinkarrow-up164arrow-down16file-text
arrow-up158arrow-down1external-linkCan the James Webb Space Telescope see galaxies over the universe's horizon?www.space.comm3t00🌎 voted@lemmy.worldM to science@lemmy.worldEnglish · 4 months agomessage-square10fedilinkfile-text
minus-squareA_A@lemmy.worldlinkfedilinkarrow-up20arrow-down1·edit-24 months agoThere are three proper distances worth keeping straight in one’s mind: Today’s (comoving) distance, the distance when the light set out, and the distance the light itself traveled. http://lifeng.lamost.org/courses/astr553/Topic16/t16_three_distancesB.html
minus-squarechingadera@lemmy.worldlinkfedilinkarrow-up9arrow-down1·4 months agoWho gave you the right to break my brain with one sentence?
There are three proper distances worth keeping straight in one’s mind: Today’s (comoving) distance, the distance when the light set out, and the distance the light itself traveled.
http://lifeng.lamost.org/courses/astr553/Topic16/t16_three_distancesB.html
Who gave you the right to break my brain with one sentence?