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%ما هو (من)٪ 1 - تعريف
PAH world hypothesis
![The [[Miller–Urey experiment]] showed that organic compounds can be readily produced under the presumed conditions of the early [[Earth]].](https://commons.wikimedia.org/wiki/Special:FilePath/Miller-Urey experiment-en.svg?width=200 "The [[Miller–Urey experiment]] showed that organic compounds can be readily produced under the presumed conditions of the early [[Earth]].")
![The [[Cat's Paw Nebula]] lies inside the [[Milky Way Galaxy]] and is located in the [[constellation]] [[Scorpius]].<br />Green areas show regions where radiation from hot stars collided with large molecules and small dust grains called "[[polycyclic aromatic hydrocarbon]]s" (PAHs), causing them to [[fluoresce]].<br />([[Spitzer Space Telescope]], 2018)](https://commons.wikimedia.org/wiki/Special:FilePath/PIA22568-CatsPawNebula-Spitzer-20181023.jpg?width=200 "The [[Cat's Paw Nebula]] lies inside the [[Milky Way Galaxy]] and is located in the [[constellation]] [[Scorpius]].<br />Green areas show regions where radiation from hot stars collided with large molecules and small dust grains called \"[[polycyclic aromatic hydrocarbon]]s\" (PAHs), causing them to [[fluoresce]].<br />([[Spitzer Space Telescope]], 2018)")
HYPOTHESIS ABOUT THE ORIGIN OF LIFE
PAH world
The PAH world hypothesis is a speculative hypothesis that proposes that polycyclic aromatic hydrocarbons (PAHs), known to be abundant in the universe, including in comets, and assumed to be abundant in the primordial soup of the early Earth, played a major role in the origin of life by mediating the synthesis of RNA molecules, leading into the RNA world. However, as yet, the hypothesis is untested.
Pah
WIKIMEDIA DISAMBIGUATION PAGE
PAH (disambiguation); Pah; Pah (disambiguation)
·noun A kind of stockaded intrenchment.
II. Pah ·interj An exclamation expressing disgust or contempt. ·see Bah.
pah
WIKIMEDIA DISAMBIGUATION PAGE
PAH (disambiguation); Pah; Pah (disambiguation)
Pah is used in writing to represent the sound someone makes when showing disgust or contempt.
EXCLAM
