Each colored curve in this image shows the spectrum for one star in the MaNGA Stellar Library. The curves show the wavelengths of light, covering the entire visible spectrum and beyond, from ultraviolet to infrared (from left to right). The height of each the curve at each point shows the intensity of light at that wavelength. The peaks and valleys of each curve indicate the presence of different chemical elements. The top eight curves are for typical stars, labeled with their spectral type and sorted in order of temperature - the O star (top) is the hottest, while the M5 star (eighth from top) is the coolest (the Sun is a G star). The bottom three spectra are for giant stars, again sorted from hottest to coolest.