An interplanetary explorer is someone who embarks on a mission to travel between planets and explore different worlds. Synonyms for interplanetary explorer include Space traveler, Intergalactic explorer, Planet hunter, Cosmic adventurer, Star voyager, Galactic surveyor, Interstellar wanderer, and Astrospace voyager. These phrases all indicate someone who is on a mission to explore the vast depths of space, seeking to discover new planets and gain knowledge of the universe. Whether using spacecraft or other advanced technologies, individuals who undertake these missions have the courage and drive to explore new and unknown territories beyond our home planet.