It should be the engineering symbol. In "Star Trek: The Motion Picture," the logos would incorporate a circle behind the delta shape, and an officer's department would also be indicated by a badge ...

Without Jeri Ryan's Seven of Nine, Voyager would have been radically different—and so would the entire Star Trek franchise.

NASA influenced Starfleet's delta symbol, connecting modern space exploration to the futuristic world of Star Trek. The US Air Force's emblem also inspired the Starfleet delta, symbolizing speed ...

In Star Trek lore, few symbols are as iconic as the Starfleet insignia—a delta-shaped emblem that has come to represent the spirit of exploration and unity in the United Federation of Planets.