Which agency would most likely regulate satellites used for worldwide communication?

The regulation of satellites is part of the scope of the Federal Communications Commission (FCC).

It is the FCC that establishes specific requirements for telecommunications equipment based on satellite broadcasts used in the country. All orbiting satellites whose transmissions reach the US, including TV, internet and telephone signals, are licensed by the FCC to operate their particular type of communication.

In addition, the FCC establishes regulations for companies that intend to use satellites in orbit to provide telecommunication services in the country, also requiring a specific license to allow the use of such communications.

a. the moon was locked into orbit by the earths gravity as it was passing by and capture hypothesis i think