Finally, in Chapter 5, we saw how Galaxy Zoo created a mass collaboration that motivated more than 100,000 people to participate in an astronomical(in both senses of the word)
image labeling task(Lintott et al. 2011).
In fact, by having human classifications for such a large number of galaxies,
Schawinski, Lintott, and others were able to show that only
about 80% of galaxies follow the expected pattern- blue spirals and red ellipticals- and numerous papers have been written about this discovery(Fortson et al. 2011).