The Spanish word 'satélite' comes from the Latin word 'satelles', which meant 'guard, escort, or attendant'. This etymology reflects how satellites, whether natural (like moons) or artificial (like spacecraft), are essentially 'attendants' that follow and orbit around a larger body. The meaning evolved from describing a person who accompanies or serves someone to describing objects that 'attend' to larger celestial bodies through orbital motion.

While 'satélite' itself is a commonly used Spanish word, particularly in scientific and technological contexts, there aren't many simpler or more common Spanish words that share its Latin root 'satelles'.

The English word 'satellite' is a direct cognate of the Spanish 'satélite', as both come from the same Latin root 'satelles'. The words are nearly identical in both spelling and pronunciation, making it easy for English speakers to remember. Both languages preserve the original concept of something that accompanies or follows another object, though today it's most commonly used to refer to either natural satellites like moons or artificial satellites orbiting Earth.