And fortunately in most use-cases, we'd prefer a spacecraft to have more upload bandwidth to Earth than download bandwidth from Earth. The largest data NASA wou

And fortunately in most use-cases, we'd prefer a spacecraft to have more upload bandwidth to Earth than download bandwidth from Earth. The largest data NASA would send to the craft would probably be software updates, megabytes or a few gigabytes at most, while the craft might want to send thousands of images and even videos, gigabytes or terabytes of data, limited only by its energy budget and length of transmission window. (Note: I don't work in this field either).