The Spanish word 'astral' comes from the Latin word 'astralis', meaning 'relating to stars'. This Latin word was formed by combining two parts: 'astrum' (meaning 'star') and the suffix '-alis' (meaning 'relating to'). This combination literally created a word meaning 'relating to or connected with the stars'.

Some related Spanish words include 'astro' (celestial body or star), 'astronomía' (astronomy), and 'astronauta' (astronaut). All these words share the same Latin root 'astrum' meaning 'star', making them part of a family of words related to celestial objects and space.

English speakers might recognize the connection to words like 'astral', 'astronomy', 'astronaut', and 'asteroid'. These English words share the same Latin origin from 'astrum'. The English word 'astral' is particularly close to the Spanish, as both languages borrowed it from Latin with the same meaning of 'relating to stars' or 'connected to the stars'.