We have. In fact since the 1960s new space telescopes have been launched far more often than every five years, some bigger than hubble. https://en.wikipedia.o

We have. In fact since the 1960s new space telescopes have been launched far more often than every five years, some bigger than hubble. https://en.wikipedia.org/wiki/List_of_space_telescopes https://en.wikipedia.org/wiki/List_of_space_telescopes