Editing Oh-My-God particle (section)

==Comparisons==
{{original research section|date=April 2023}}
The ''Oh-My-God particle''{{'}}s energy was estimated as {{val|3.2|0.9|e=20|ul=eV}}, or {{val|51|14|ul=J}}. Although this amount is phenomenally large for a single elementary particle – far outstripping the highest energy that human technology can generate in a particle – it is still far below the level of the [[Planck scale]], where exotic physics is expected. Though a [[subatomic particle]], its energy was comparable to the [[Gravitational potential energy#Formulation|gravitational potential energy]] of a 1&nbsp;[[kilogram]] object that could fall 5&nbsp;[[meters]] off a two-story building.

The ''Oh-My-God particle'' had {{10^|20}} (100&nbsp;[[quintillion]]) times the [[photon energy]] of visible light, equivalent to a {{convert|5|oz|order=flip|adj=on|sp=us}} [[baseball (object)|baseball]] travelling at about {{convert|28|m/s|km/h mph|abbr=on}}. {{Sky|5|40|48|+|48|0|0|98000000}} Its energy was 20&nbsp;million times greater than the [[very-high-energy gamma ray|highest photon energy measured]] in [[electromagnetic radiation]] emitted by an extragalactic object, the [[blazar]] [[Markarian 501]].<ref>{{cite journal |author1=Aharonian, F. |collaboration=The HEGRA Collaboration |year=1999 |title=The time averaged TeV energy spectrum of Mkn&nbsp;501 of the extraordinary 1997 outburst as measured with the stereoscopic Cherenkov telescope system of HEGRA |journal=[[Astronomy & Astrophysics]] |volume=349 |pages=11–28 |arxiv=astro-ph/9903386v2 |bibcode=1999A&A...349...11A |s2cid=15448541 |url=https://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1999A%26A...349...11A&defaultprint=YES&filetype=.pdf |access-date=June 19, 2023 |archive-date=June 19, 2023 |archive-url=https://web.archive.org/web/20230619200950/https://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1999A%26A...349...11A&defaultprint=YES&filetype=.pdf |url-status=live }}</ref>{{update-inline|date=February 2022}}

It had a [[relativistic mass]] equivalent to around {{val|3.4|e=11}} [[dalton (unit)|daltons]], or {{val|2.4|e=10}} nitrogen nuclei.

===High energy, but far below the Planck scale===
While the particle's energy was higher than anything achieved in terrestrial accelerators, it was still about 40&nbsp;million times ''lower'' than the [[Planck energy]] ({{val|1.2208901|e=28|u=eV}}). Particles of that energy would be required in order to expose effects on the [[Planck scale]]. A proton with that much energy would travel {{val|1.665|e=15}} times closer to the speed of light than the Oh-My-God particle did. As viewed from Earth and observed in Earth's reference frame, it would take about {{val|3.579|e=20|u=years}} ({{val|2.59|e=10}}&nbsp;times the current [[age of the universe]]) for a photon to overtake a Planck energy proton with a 1&nbsp;cm lead.{{citation needed |date=March 2020}}