
Sure. Right. Or, look at it this way: If you were part of the alien conspiracy, how would you discredit anyone who attempted to reveal your secret plans for humanity? Simple. Reveal the plans yourself, with a few details changed. That's the only thing that explains this.
You're wondering if these were the same aliens in charge of the Nazi weapons program; congrats. Same guys.
Well, that explains David Bowie, but it doesn't understand why the Nazis lost.
Why would the aliens back Hitler? The article notes that they're Tall White Nordic Aliens, so that might explain things, but again, what's the point? Conquest? Or is this what advanced civilizations do when simulated entertainment gets boring? Think about it: we imagine "Independence Day" scenarios where the aliens show up to steal our resources, "Predator" scenarios where they come to hunt for sport. But what if some aliens come to amuse themselves by pitting groups against each in long-term strategic games? That's right: the world is being run by alien nerds who are playing their version of Dungeons and Dragons.
SCIENCE! The latest view of the universe is astonishing:

Just a corner of the sky, and it teems with galaxies. Slate's Bad Astronomer explains what you're looking at. (Hint: the beginning of creation.)
Wonder who's home. Seems unlikely they'd come here to help someone annex Poland.
To show how far we've come, here's a 1955 Kodak ad that shows the wonders of the universe: