[jjk166]

The issue with the shuttle wasn't the material science. It was designed around a mission profile of servicing spy satellites, which at the time had film which needed to be developed. The defense department gave NASA requirements which could only be satisfied by moving the orbiter to the side of the rocket, dramatically increasing potential damage to the thermal tiles and making crew escape basically impossible. This was all justified by the incredibly large number of flights that the shuttle would fly to service these satellites, and the money the defense department would pay for these missions. The shuttle was screwed late in production when digital camera technology allowed for spy satellites that didn't need regular servicing, eliminating most of the demand for the shuttle and rendering the infrastructure designed for it unsustainable.

[fluoridation]

Wait, TV signals weren't unknown in the '80s and '90s. Why were they using film instead of TV cameras?

[jjk166]

Well for starters, this was the 70s - the space shuttle's development started in 1968 and its maiden flight was in 1981. The last spy satellite program to use film ran from 1971 to 1986. Further, the issue wasn't a lack of knowledge of TV signals - the first wireless video transmission had been made in 1923. The issue was producing digital video cameras of sufficient quality for the task in an appropriate size, and then transmitting such large files to the ground. Nobody in 1968 foresaw the massive improvements in digital electronics miniaturization that would unfold over the coming decades.

[dboreham]

Rather than "very late to use tv" they were "very early to use CCDs". Even so that only happened in the 1980s. Before that film had to be used, same as we all had to use film for our holiday snaps until 2000.