What are the three general groupings used to classify functional satellites?

Answer

Communications, Earth observation platforms, Scientific missions

Satellites are grouped by purpose into those for global connectivity (communications), those taking images for various monitoring purposes (Earth observation platforms), and those dedicated to understanding the universe (scientific missions like telescopes and probes).

What are the three general groupings used to classify functional satellites?
Spaceexplorationrocketssatellitesspacecraftlaunch