NASA says all of the telescope's instruments are 'ready'
NASA announced Monday all four of the James Webb Space Telescope's scientific instruments are ready to start being used.
The space agency said there are 17 modes, or ways, to operate the instruments. All have been examined and are "ready to begin full scientific operations."
The last step was was checking the the telescope's NIRCam, which block starlight so scientists can detect other nearby structures, such as exoplanets.