NASA's James Webb Space Telescope reaches another alignment milestone, and its optics are working correctly

NASA has announced that its James Webb Space Telescope has reached another alignment milestone. On March 11, the Webb team completed the critical alignment stage known as 'fine phasing.' Fine phasing is the fifth of seven major alignment steps. It is conducted three times, directly after each round of coarse phasing, and measures and corrects remaining alignment areas. NASA writes, 'These operations measure and correct the remaining alignment errors using the same defocusing method applied durin...