Which of the following is not a reason to study spectra in astronomy? (1 Point) The three different types of spectra are emission, continuous, and absorption. Stars contain very different materials, which gives rise to their different spectra. Stars contain nearly the same materials, but have different spectra because of their vastly different surface temperatures. A continuous spectrum is a spectrum that contains all wavelengths of light within a specified range, with no particular wavelengths missing or enhanced. An absorption spectrum is a spectrum that contains dark lines or bands of color against a continuous or nearly continuous