Airships, also known as dirigibles or zeppelins, are large, buoyant aircraft that are filled with gas, such as helium or hydrogen, to provide lift. They have a long, elongated shape and are typically powered by engines that allow them to move through the air. Airships can carry passengers and cargo, making them useful for various purposes, including tourism and advertising. Unlike airplanes, airships travel slowly and can hover in one place for extended periods. They are often used for aerial photography, surveillance, and even scientific research. Although their popularity declined with the rise of airplanes, airships are still appreciated for their unique capabilities and nostalgic charm.