The early Eagle’s APG-63 radar was a pulse-Doppler radar was initially not programmed to display a SR-71 closing at full speed, making it invisible.
Roman Commissioning
Where is Roman? Roman is making its three-month journey from Earth to Sun-Earth Lagrange Point 2, or L2. Along the way, Roman is undergoing a process called commissioning, where systems are turned on, adjusted, calibrated, and prepared for science operations. Commissioning is the time for scientists and engineers to make sure that Roman is performing […]