Superman: Whatever Happened to the Man of Tomorrow? reference to one of the nicknames of Superman as the "Man of Tomorrow", and was later again used in the title of another Superman . The comic book, "Action Comics" #1, published in April 1938 by "National Allied Publications" (later renamed DC Comics), marked the first publication of the character of Superman created by Jerry Siegel and Joe Shuster. The comic quickly became a success, and its editor soon realized that it was because of the popularity of the character. In an unprecedented move at the time, National Allied Publications introduced a second comic book, "Superman", exclusively featuring the popular
Superman as tough as he is. In "Action Comics" #1, Superman could not fly. He traveled by running and leaping, which he could do to a prodigious degree thanks to his strength. Superman gained the ability to fly in the second episode of the radio serial in 1940. Superman can fly at great speeds. He can break the sound barrier, and in some stories he can even fly faster than light to travel to distant galaxies. Superman can project and perceive X-rays via his eyes, which allows him to see through objects. He first uses this power in "Action Comics" #11