Editing Observable universe (section)

== Most distant objects ==
{{main|List of the most distant astronomical objects}}
The most distant [[astronomical object]] identified (as of May of 2025) is a galaxy classified as [[MoM-z14]]<ref>{{Citation |last=Naidu |first=Rohan P. |title=<nowiki>A Cosmic Miracle: A Remarkably Luminous Galaxy at $z_{\rm{spec}}=14.44$ Confirmed with JWST</nowiki> |date=2025-05-16 |url=http://arxiv.org/abs/2505.11263 |access-date=2025-05-31 |publisher=arXiv |doi=10.48550/arXiv.2505.11263 |id=arXiv:2505.11263 |last2=Oesch |first2=Pascal A. |last3=Brammer |first3=Gabriel |last4=Weibel |first4=Andrea |last5=Li |first5=Yijia |last6=Matthee |first6=Jorryt |last7=Chisholm |first7=John |last8=Pollock |first8=Clara L. |last9=Heintz |first9=Kasper E.}}</ref>, at a redshift of 14.44. In 2009, a [[gamma ray burst]], [[GRB 090423]], was found to have a [[redshift]] of 8.2, which indicates that the collapsing star that caused it exploded when the universe was only 630 million years old.<ref name="NASAGRB">{{Cite web |title=New Gamma-Ray Burst Smashes Cosmic Distance Record {{!}} Science Mission Directorate |url=https://science.nasa.gov/science-news/science-at-nasa/2009/28apr_grbsmash/ |access-date=2023-09-15 |website=science.nasa.gov}}</ref> The burst happened approximately 13 billion years ago,<ref>{{Cite web |last=Atkinson |first=Nancy |date=2009-10-28 |title=More Observations of GRB 090423, the Most Distant Known Object in the Universe |url=https://www.universetoday.com/43517/more-observations-of-grb-090423-the-most-distant-known-object-in-the-universe/ |access-date=2023-09-15 |website=Universe Today |language=en-US}}</ref> so a distance of about 13 billion light-years was widely quoted in the media, or sometimes a more precise figure of 13.035 billion light-years.<ref name="NASAGRB" /> 

This would be the "light travel distance" (see [[Distance measures (cosmology)]]) rather than the "[[Comoving and proper distances#Uses of the proper distance|proper distance]]" used in both [[Hubble's law]] and in defining the size of the observable universe. Cosmologist [[Edward L. Wright|Ned Wright]] argues against using this measure.<ref>{{Cite web |title=Light Travel Time Distance |url=https://www.astro.ucla.edu/~wright/Dltt_is_Dumb.html |access-date=2023-07-01 |website=www.astro.ucla.edu}}</ref> The proper distance for a redshift of 8.2 would be about 9.2 [[Megaparsecs|Gpc]],<ref>{{cite journal |author=Meszaros, Attila |display-authors=etal |journal=Baltic Astronomy |volume=18 |title=Impact on cosmology of the celestial anisotropy of the short gamma-ray bursts |pages=293–296 |date=2009 |arxiv=1005.1558 |bibcode=2009BaltA..18..293M }}</ref> or about 30 billion light-years.