The websites saw tens of thousands of Facebook shares, comments, and reactions to their posts, according to an analysis using BuzzSumo, a social analytics tool.
A Reddit thread on r/conspiracy, meanwhile, saw over 200 comments.
"This is kind of mind boggling considering I actually believed they sent a rover," wrote one Reddit user. "If they are just on this island though, where is NASA's money actually going to? The rabbit trail begins."
Then there are all the people who yell at the Twitter account for the Curiosity rover, calling it fake news.