Editing Proplyd (section)

{{Short description|Dust ring surrounding large stars thousands of solar radii wide}}
[[File:Orion_Nebula_with_proplyd_highlights_(captured_by_the_Hubble_Space_Telescope).jpg|thumb|300px|Proplyds in the [[Orion Nebula]]]]
A '''proplyd''', [[syllabic abbreviation|short]] for '''ionized protoplanetary disk''', is an externally illuminated [[Photoevaporation|photoevaporating]] [[protoplanetary disk]] around a [[Young stellar object|young star]]. Nearly 180 proplyds have been discovered in the [[Orion Nebula]].<ref name= ricci08  /> Images of proplyds in other [[star-forming region]]s are rare, while Orion is the only region with a large known sample due to its relative proximity to [[Earth]].<ref name=esa09 />