Superman of the Übermensch; they never acknowledged as much. Since 1938, Superman stories have been regularly published in periodical comic books published by DC Comics. The first and oldest of these is "Action Comics", which began in April 1938. "Action Comics" was initially an anthology magazine, but it eventually became dedicated to Superman stories. The second oldest periodical is "Superman", which began in June 1939. "Action Comics" and "Superman" have been published without interruption (ignoring changes to the title and numbering scheme). A number of other shorter-lived Superman periodicals have been published over the years. Superman is part of the DC
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