Brokers are intermediaries who attempt to matchmake
"buyers' and "sellers". In the space
industry this business now includes a number of activities.
For example, a broker might match surplus satellite
transponder time to companies in need, e.g. TV and radio
stations, or match extra space on a rocket to someone
with a satellite in need of a ride to orbit.
The sites below provide interesting information on
the space industry in general such as charts of the
satellites current operating in geostationary orbit.