As a subject matter expert in comic book lore and superhero narratives, I can provide an analysis of Superman's immortality on Earth.

Superman, a character from DC Comics, is often portrayed as being incredibly long-lived, if not immortal, on Earth. His Kryptonian physiology, combined with Earth's yellow sun, grants him a range of superpowers that include super strength, invulnerability, flight, and various other abilities. These powers, along with his advanced healing factor, contribute to the perception of his immortality.

However, it's important to note that Superman is not truly immortal in the literal sense. He can be harmed or killed under certain conditions. For example, Kryptonite, a mineral from his home planet, can weaken or kill him. Magic can also pose a threat, as can other powerful beings or energies. Additionally, without the light of a yellow sun, his powers can fade, and he can become more vulnerable.

In summary, while Superman is extremely long-lived and difficult to kill, he is not immortal on Earth in an absolute sense.

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There are strong indicators that Superman may also be immortal. Theoretically, so long as he has access to a constant source of yellow solar radiation, he will not age or die. In the continuity of the Smallville television series, it has been established that Clark Kent may live (seemingly) forever.read more >>