Sentence:  While much good <WSD>science</WSD> has come from the Hubble telescope (including the most reliable measure to date for the expansion rate of the universe), you would never know from media accounts that the foundation of our cosmic knowledge continues to flow primarily from the analysis of spectra and not from looking at pretty pictures. 
Meaning of the word marked with <WSD> tags:  Knowledge derived from scientific disciplines, scientific method, or any systematic effort.