مطيافية فلكية: الفرق بين النسختين

 

'''مطيافية فلكية''' (بالإنجليزية:

 

''' is the study of [[astronomy]] using the techniques of [[spectroscopy]] to measure the [[electromagnetic spectrum|spectrum]] of [[electromagnetic radiation]], including visible light and radio, which [[radiant energy|radiates]] from [[star]]s and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using [[Doppler effect|Doppler shift]] measurements.