Okay - I do not even know where to start.
First of all, we must understand that the period from 1966 to 1972 is the time of a sharp rise in the standard of living of the population (there was no shortage of goods). If this is multiplied by the victory in the space race, then this will be an extremely remarkable time.
On the other hand, there is another interesting point - in the 60s (the most favorable time for the Soviet Union), in my country there was a huge interest in Western fashion and music (I saw many films of that era - it was like a game - "find 10 differences "). And most importantly, the bureaucrats from the Central Committee looked at it through their fingers. Why? I'm interested in the theme of the ideology's spreading and I can say that when someone's lifestyle is created, there is a risk of picking up the way of thinking (for our thinking depends on how we live), but in the 1960s interest was just interest. This does not mean that there was no risk - it was just then that confidence in one's own superiority was strong. This was perceived as something transient, far from the most significant. "Well, what with the fact that the jeans - but we are the main ones in space." - in other words, the Soviet ideology had material confirmation of its rightness.
As soon as Soviet ideology became less significant, ideological attacks on Western music and fashion immediately began, but everyone did not care. As a result, hunting for Western brands began.
On the other hand, we must take into account that every next flight caused less and less excitement. I think that landing on a natural satellite will cause an unprecedented level of glee, but the effect of it will last two or three years. However, if my father believes, the cosmonauts still enjoyed immense popularity.
Quite possibly the thawing mood lasted even longer, but much depends on the politics of the Politburo (the creation or non-creation of a studio for science fiction films, the economic situation, the history of the Third CPSU Program ...). However, there is an event that can and does not depend on the will of the CPSU - the tragic death of Yuri Gagarin
. Many claim that the Thaw ended in the Prague Spring - this is not entirely true. The fact is that this was known mostly by a handful of intellectuals. Yes - this event lowered the international prestige of the USSR, killed hopes for the democratization of the ruling apparatus, but the majority of the population was worried about the death of Yuri Alexievich. After that, everything turned out so ... ordinary, bored .... gray.