NASA’s James Webb Space Telescope is nearly 1 million miles (1.5 million kilometer) away from Earth, orbiting around the sun-Earth Lagrange point 2. How do we send commands and receive telemetry—the science and engineering data from the observatory—from that far away? We use the DSN (Deep Space Network) to communicate with the observatory. We receive data when we have a contact with Webb using a DSN antenna
Talking with Webb using the Deep Space Network
