If quasars often resemble little blue stars, what was it about them that so surprised astronomers when they were dis?covered?

Question

Quizplus · Accepted Answer

Quasars were initially difficult to recognize in spectra because their spectral lines were unusual and didn't match those of known stars or galaxies. Once they were identified, astronomers were surprised to find that their spectral lines had large redshifts, indicating that they were moving away from us at incredibly high speeds. This led to the realization that quasars were incredibly distant objects, and therefore extremely luminous, which had important implications for our understanding of cosmology.

If Quasars Often Resemble Little Blue Stars, What Was It