#JWST $10 Billion over decades? That is no more than 4% of NASAs budget every year. The Department of defense gets over $700 Billion every year.
Some Webb developments have had spin-off benefits. One example assists surgeons performing LASIK eye surgery: Engineers developed
a technique for precisely and rapidly measuring the mirrors to guide their grinding and polishing.
This technology has since been adapted to creating high-definition maps of patients’ eyes for improved
surgical precision.
Also note, The #Ariane 5 Rocket that will launch #WEBB has its Main Vulcain 2 Main Engine that will ignite 7 seconds before the Solid Rocket boosters. The SRB will provide over 80% of the Thrust needed to get #JWST to L2