Spectral analysis and the Doppler effect | Josef M. Gassner

How do we construct a worldview in a universe whose objects are unimaginably far away? We glean as much information as possible from the light that falls into our telescopes from the depths of space. Astronomy means interpreting light, and its foundation lies in spectral analysis and the Doppler effect. Josef M. Gaßner explains the connections within this cosmic light code, upon which our knowledge is based, as clearly as possible.