my flat earth friend may finally be convinced that we have a rover named Curiosity on Mars

He will believe whatever he wants to believe, I am sure that when live streaming videos from Mars become a reality, they will start to say those videos are fake and filmed using a professional studio, or something like that.

Believing the Earth is flat nowadays is absurd, and it is a surprise to find people really supporting those theories.

The best way to finally put an end to those beliefs is space tourism, and take that people to space so they can see it with their own eyes.

Cheers @greenrun!