An intriguing hidden message has been uncovered on the official Doctor Who website!
Under the Fourth Dimension tab on the episode guide for The Impossible Astronaut, you’ll notice that each of the facts has one of its words marked out in italics. Put these words together and it reads:
“All the secrets you seek can be found here on the web”…
We suppose the only thing to do is go and search the official site! Let us know if you find anything below. Thanks to TSG for sharing the discovery in our episode discussion!