Complex sentence: It also encompasses government regulation of third-party activities such as commercial communications satellites and private spaceflight as well as the creation and application of space law and space advocacy organizations that exist to support the cause of space exploration.
Split into simpler sentences: It also encompasses government regulation of third-party activities such as commercial communications satellites and private spaceflight. Space policy also encompasses the creation and application of space law, and space advocacy organizations exist to support the cause of space exploration.