Previous space observatories (such as IRAS, the Infrared Astronomical Satellite, and ISO, the Infrared Space Observatory) were launched during the 1980s and 1990s and great advances in astronomical technology have been made since then.
Predošlé vesmírne satelity (ako IRAS - the Infrared Astronomical Satellite, ISO, the Infrared Space Observatory) boli v prevádzke počas rokov 1980 a 1990 a odvtedy sa v astronomických technológiách urobili veľké pokroky.