Saturday, 25 April 2020


Carried aloft by the Space Shuttle Discovery mission that launched on the day prior, the Hubble Space Telescope, namesake of Edwin Powell Hubble (*1889 - †1953) pioneering astronomer who established the discipline of observational cosmology—leading to the conclusion along with Georges Lemaรฎtre that the Universe is expanding—was successfully deployed into stable low Earth orbit on this day in 1990. Versatile and becoming a public-relations boon for space exploration and the sciences in general with its unprecedented imagery and succession of discoveries, its operators estimate it could remain in service another two decades at least with its successor, the James Webb Space Telescope (JWST, named for the NASA administrator that oversaw the Apollo programme), scheduled to be brought on-line in March 2021.