https://www.cnn.com/2021/12/30/world/james-webb-space-telescope-updates-scn/index.html https://www.cnn.com/2021/12/30/world/james-webb-space-telesc... “It also

https://www.cnn.com/2021/12/30/world/james-webb-space-telescope-updates-scn/index.html https://www.cnn.com/2021/12/30/world/james-webb-space-telesc... “It also used less propellant than planned due to the precision of the telescope's launch aboard the Ariane 5 rocket, so "the observatory should have enough propellant to allow support of science operations in orbit for significantly more than a 10-year science lifetime," according to NASA.”