Kaliwanagan: Pagkakaiba sa mga binago

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Bagong pahina: thumb|230px|right|Image of galaxy [[NGC 4945 showing the huge luminosity of the central few star clusters, suggesting there are 10 to 100 supergiant stars ...
 
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[[File:Phot-27e-07.jpg|thumb|230px|right|Image of galaxy [[NGC 4945]] showing the huge luminosity of the central few star clusters, suggesting there are 10 to 100 supergiant stars in each of these, packed into regions just a few [[parsecs]] across.]]
 
Ang '''luminosidad''' o, '''''luminosity''''' o '''kaliwanagan''' ay pangkalahatang nauunawaan bilang isang [[sukatan]] ng [[liwanag]]. Sa bawat disiplina, gayunman, naiiba ang dipinisyon ng termino, depende sa kung ano ang sinusukat.<ref name="AUSTRALIA2004">{{cite web
|title=Luminosity of Stars
|publisher=[[Australia Telescope National Facility]]