Here's what's on the golden record, NASA's message to aliens carried by the Voyager probes

Sagan's team created the greatest puzzle of all time, which you can only solve if your species understands the basic nature ...
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25 most hardcore comic book supervillains: Who made the cut?

Explore the 25 Most Hardcore Comic Book Supervillains ever! From planet-eaters to mind-benders, discover the most brutal and ...