Third-person narrative can be identified by looking at the pronouns used in the narrative. Third-person narrative uses "he," "she," "it" and "they," not "I" or "you."
This form of narrative tends to offer the most objective view of a story because neither the narrator nor the reader are participants. Even in third-person narrative where subjective thoughts and feelings are known, they are generally contextualized by the thoughts and feelings of other characters.
Objective third-person narration does not reveal anything internal about a character, reporting only what can be observed. Subjective narration uses the thoughts of a number of characters as a lens to relate and interpret events.
An omniscient narrator has access to all characters' perspectives at all times, as well as all events and times. A limited or closed narrative voice uses the thoughts of only one character to experience the events in the story.
Occasionally, third-person narratives make limited use of other narrative voices, both first- and second-person. Occasional use of third-person draws the narrator into the story, while use of the second-person involves the reader as a participant.