Since Superman is a native of Krypton, a planet that had a red sun, under a yellow sun (like that of Earth's his Kryptonian cells act as living solar batteries, absorbing solar energy and giving him superhuman powers. He possesses tremendous strength; while Superman's strength is not infinite, its full extent is so grea that it has never been accurately measured. His body is virtually indesrtuctible.

Superman's sharp senses enable him to hear souns too faint to be detected by the normal human ear. His "telescopic vision" enables him to focus his sight on distant objects far beyond the range of normal human sight. His "microscopic vision" allows him to observe an object in microscopic detail. Superman's so called "x-ray vision" enables him to see clearly through solid objects. Certain dense materials, notably lead, obstruct this ability. His power to generate heat within objects manifests itself as a red glow within his eyes, and is therefore known as "heat vision."