Many research teams have previously suggested assembling large space telescopes from smaller modules, with examples ranging from 30 to 100 meters in diameter. (insidescience.org)
The NRC recommended WFIRST as the top priority for the next large space telescope after the James Webb Space Telescope (JWST) in its most recent Decadal Survey for astronomy and astrophysics, New Worlds, New Horizons (NWNH). (spacepolicyonline.com)
After JWST, the next large space telescope in NASA's queue is a mission called the Wide - Field Infrared Survey Telescope, but it too would operate mainly in the infrared. (scientificamerican.com)