Javier Gómez Elvira
Aeronautical engineer and former head of INTA's Department of Payloads and Space Sciences
JWST is discovering a universe that could not be seen with the Hubble telescope, as well as pushing the limits hundreds of millions of years beyond what is currently known. All this is possible thanks to the work of a group of engineers and scientists who began discussing what the JWST design should look like at the first workshop in 1989, when it was still called the Next Generation Space Telescope. These 32 years [until it was launched in December 2021] are yielding incredible results.
JWST is proving that you need to make great technological developments to get great scientific results. Technologies such as its 18 hexagonal segments deployed in space and aligned with precision are a milestone; its thermal control system using a solar radiation isolation system of more than 300 m2 and allowing the instrumentation to be at 50K or the development of electronics capable of working in cryogenic conditions. Many years of effort to develop, build and test, and thus ensure that the telescope will work as planned. Effort which, on the other hand, is already being used in other fields such as medicine or in high-precision measurement systems.