In the near-future (as seen from 1962), the experimental X-1825 attempts to break through the "Anti-Force" surrounding Earth that keeps spacecraft from going any further into outer space than orbiting our world.
Veteran spaceman Ian Stannard and rookie Johnny Mack manage to steer the ship through the barrier and land on the Moon's surface where they are surrounded by silent humanoids in spacesuits who bring them to an underground city...
Battle is joined, and the mayhem continues...tomorrow!
This book-length tale from Dell's Four Color Comics #1253 (1962) was illustrated by Jack Sparling and probably scripted by Joe Gill.