Energy shields are protective barriers created using energy fields, designed to block or deflect physical objects, radiation, or energy attacks. They are often depicted in science fiction, such as in Star Wars or Star Trek, where they serve to protect spaceships and characters from harm. These shields can vary in strength and durability, depending on the technology used to generate them. In real-world applications, energy shields are still largely theoretical but are being explored in military and scientific research. Concepts like plasma shields or electromagnetic fields aim to create protective layers around vehicles or installations, potentially enhancing safety against various threats.