We all know the
first broadcast from Earth that ETs will receive is Adolf Hitler. So you should try to beat that.
The Nazis are also said to have been the first to reach space, with the V2 rocket, and the first photos of Earth from space were taken from a V2, albeit in 1946 by the US:
Everyone knows about Operation Paperclip, and the influence of Wernher von Braun, but the Soviets had similar ideas with Operation Osoaviakhim; their R1 rocket was a copy of the V2, and a development of it, the R2, was used by the other space superpower China as the DF1.
So ETs will definitely love Nazi stuff. Send up a Trump speech.
