Planet Explorer is a science fiction story by Murray Leinster. The story is about a group of explorers who travel to a remote planet in search of resources. When they arrive, they discover that the planet is already inhabited by an intelligent species. The explorers must navigate the challenges of communicating with the alien species and avoiding conflict, while also searching for the resources they need. The story explores themes of interplanetary exploration, first contact with alien species, and the difficulties of communication and cooperation in the face of cultural differences.