Hubble launch approximately coincided - and contributed - to a rapid expansion of astronomical knowledge. All other tools, both Earth-based and space-based, sin

Hubble launch approximately coincided - and contributed - to a rapid expansion of astronomical knowledge. All other tools, both Earth-based and space-based, since early 1990-s contributed vast heaps of data which reshaped astronomy - noticeably changing the speed of development, hence the need for distinction.