The issue of sustainability seems like a distant, abstract notion to people. It's difficult to raise awareness about the problem; and it's even more difficult reaching the right audience (ie.: the right amount of people) to communicate its important message. However, we realised that in Brazil there's a huge audience that can be addressed: football fans. In the land of Carnival it's a common tradition amongst the most passionate fans to dress up in costumes when visiting a football match. So, using this cultural insight, we secretly introduced a "fan" wearing an astronaut outfit, who appeared in four major matches of the Brazilian football League. This mysterious Astronaut Fan every time shared an important message: "Take care of Earth. It's the only planet with football." On the height of media attention, we finally revealed his character: he was AMARAL – a former player of the Brazilian national squad!!!