Beginning in the 1960s, and widely accepted by the 1970s, the space opera was redefined, following Brian Aldiss' definition in Space Opera (1974) as – as paraphrased by Hartwell and Cramer – "the good old stuff".
Di awal tahun 1960-an, dan diterima luas pada tahun 1970-an, opera antariksa mengalami pendefinisian ulang, mengikuti definisi dari Brian Aldiss dalam Space Opera (1974) sebagai (menurut parafrasa Hartwell dan Cramer) "the good old stuff".