Ghost Planet

Thrilling Wonder Stories v33n02 (1948 12.Standard) Internet Archive. Formatted, proofed, illustrated, v1.5. A story of the first encounter with an alien civilization. The newcomers are from a world inhabiting a reality tangential to our own in this early many-worlds story. War is averted by heroic scientists. Stupid governmental politics is put in its place. The woman gets the right guy in the end.