Comte was proven wrong in his claim that we could never learn the composition of stars. What do we know today that Comte did not know when making his claim, and that makes it possible for us to learn the chemical compositions of stars?
a) Stars emit not only visible light, but also other forms of light including infrared, ultraviolet, and X-rays.
b) Telescopes tend to become larger and more powerful with time.
c) Sunlight is made from a combination of colors that can be spread out into a spectrum.