this post was submitted on 16 Jul 2024
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science

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Can the James Webb Space Telescope see galaxies over the universe's horizon? (www.space.com)
submitted 3 months ago by m3t00 to c/science
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hmm, light on answers but interesting questions

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[โ€“] A_A 20 points 3 months ago* (last edited 3 months ago) (1 children)

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.
image

http://lifeng.lamost.org/courses/astr553/Topic16/t16_three_distancesB.html

[โ€“] whostosay 8 points 3 months ago

Who gave you the right to break my brain with one sentence?