Abstract
Our story begins in the mid-1980s with community-wide discussions on Key Projects for the NASA/ESA Hubble Space Telescope. The extragalactic distance scale was the perfect example of a project that would be awarded a generous allocation of time in order that vital scientific goals would be accomplished even if the lifetime of the telescope proved to be short. As Marc Aaronson (Figure 1), the original principal investigator of the project, said in his Pierce Prize Lecture in 1985, “The distance scale path has been a long and torturous one, but with the imminent launch of HST there is good reason to believe that the end is finally in sight.”
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