Legendary Spanish goalkeeper Iker Casillas has cast doubt on the United States moon landings!
Neil Armstrong and Buzz Aldrin first stepped foot on the lunar surface in 1969, meaning that 2019 will mark the 50th anniversary of that "one small step for man".
However, a number of conspiracy theorists believe that the moon landings were faked by the USA, with such evidence presented as an absence of stars in photographs and that the American flag fluttered as if caught in a breeze.
There are answers to each theory, but Casillas has now thrown his own hat into the ring, insisting that he has his own doubts.
Writing on Twitter, the Porto stopper said: "Next year it is 50 years (presumably) since the man stepped on the moon. I'm at a dinner party with friends... arguing about it. I raise the public gathering! Do you think he stepped on? Not me!"
Casillas is running a poll alongside the tweet, asking people to vote on whether they believe the moon landings actually happened.
Over 195,000 people have cast a vote at the time of writing, with 60 per cent believing the authenticity of the lunar landing.
Casillas has enjoyed an out-of-this-world career and has won an array of trophies both at club level and internationally.
The 37-year-old won the World Cup with Spain in 2010, and also won two successive European Championships, in 2008 and 2012.
With Real Madrid, he won five La Liga titles, and also lifted the Champions League three times.
Or maybe he didn't.