Carry out all the operations on a computer, the graph in Excel or some graphing program or, failing that, you can present it by hand on a white sheet with clear letters and numbers, without cross-outs, scratches, etc... and the graph on a grid sheet using the rule and well presented. Submit through Moodle in pdf format. By 1929, the scientist Edwin Hubble, using the data obtained from the shift network through his astronomical observations, proposed the existence of a direct relationship between the speed of receding of the galaxies and the distance at which they are from the observer. Hubble showed that his proposal was consistent with what was observed. I. The spectrum obtained in figure 1, shows the shift network of an observed galaxy, we are going to use the red line in the absorption spectrum of the element hydrogen since it is the most common element in the universe, and it is abundant in galaxies. 1. Examine Figure 1 and determine the wavelengths of the hydrogen red line in each case, and calculate the red shift (z) using the equation discussed in class (see class summaries on your Moodle). 2. Based on the concept of the Doppler effect of light, calculate how fast (km/s) the Galaxy is moving away from us. 3. Calculate the distance (in Mpc and km) to which the galaxy is located, applying Hubble's law. (Use the currently accepted value of H0 ~ 73.8 km/s/Mpc).