Tales of Suspense #15

After attracting the hostile attention of Goom of Planet X, a scientist realizes that any civilization possessing such advanced technology must be benevolent and that his radar transmissions must have been intercepted by a criminal. He rebroadcasts to Planet X, and the Earth officials plan to execute him as a traitor summoning a full invasion fleet from Planet X, when the representatives from Planet X arrive and stop the execution and take Goom into their custody and leave the planet.