Aamir Khan is all set to essay the role of wrestler Mahavir Phogat in his upcoming film Dangal. And if things fall in place the next big role AK will portray is that of India’s first astronaut Rakesh Sharma. Bet that fans of the actor are super thrilled to hear that one. Bollywood is currently smitten by biopics and their stupendous success at the box office only makes them more bankable.