Satellite forums sounds like a very specific hobby, but I can’t quite tell which one:

• forums where all the remote sensing / OSINT / geospatial nerds gather.
• forums for satellite broadcast enthousiasts.
• forums for discussion on space exploration and satellites carrying scientific equipment or actual satellite astronomical bodies.
• forums that are called satellite forums as some form of jargon I am about to learn about for the first time.

What are people into these days?