All the things up there can be contacted with radio. Some downstream data is easly readable. Sending is another thing, but satelites are in public communication space.
Not all, but wouldn't that make a case for more rigorous standards? Economically things must be prioritized, but there is a very big gap between NASA standards and typical commercial software.
All the things up there can be contacted with radio. Some downstream data is easly readable. Sending is another thing, but satelites are in public communication space.