Editing Glycine (section)

==Presence in space==
The presence of glycine outside the Earth was confirmed in 2009, based on the analysis of samples that had been taken in 2004 by the [[NASA]] spacecraft ''[[Stardust (spacecraft)|Stardust]]'' from comet [[Wild 2]] and subsequently returned to Earth. Glycine had previously been identified in the [[Murchison meteorite]] in 1970.<ref>{{cite journal | vauthors = Kvenvolden K, Lawless J, Pering K, Peterson E, Flores J, Ponnamperuma C, Kaplan IR, Moore C | title = Evidence for extraterrestrial amino-acids and hydrocarbons in the Murchison meteorite | journal = Nature | volume = 228 | issue = 5275 | pages = 923–926 | date = December 1970 | pmid = 5482102 | doi = 10.1038/228923a0 | bibcode = 1970Natur.228..923K | s2cid = 4147981 }}</ref> The discovery of glycine in outer space bolstered the hypothesis of so-called [[Pseudo-panspermia|soft-panspermia]], which claims that the "building blocks" of life are widespread throughout the universe.<ref>{{Cite news |url= https://www.reuters.com/article/scienceNews/idUSTRE57H02I20090818 |title=Building block of life found on comet  |date=18 August 2009 |access-date=2009-08-18 |work=Thomson Reuters 2009}}</ref> In 2016, detection of glycine within Comet [[67P/Churyumov–Gerasimenko]] by the [[Rosetta (spacecraft)|''Rosetta'' spacecraft]] was announced.<ref>{{Cite news |author=European Space Agency |url=http://sci.esa.int/rosetta/57858-rosettas-comet-contains-ingredients-for-life/ |title=Rosetta's comet contains ingredients for life |date=27 May 2016 |access-date=2016-06-05}}</ref>

The detection of glycine outside the [[Solar System]] in the [[interstellar medium]] has been debated.<ref name="Snyder">{{cite journal | vauthors = Ramos MF, Silva NA, Muga NJ, Pinto AN | title = Reversal operator to compensate polarization random drifts in quantum communications | journal = Optics Express | volume = 28 | issue = 4 | pages = 5035–5049 | date = February 2020 | pmid = 32121732 | doi = 10.1086/426677 | bibcode = 2005ApJ...619..914S | arxiv = astro-ph/0410335 | s2cid = 16286204 }}</ref>