For Sean Kaufman, trading summer for space created some surprising - but invigorating - challenges in For All Mankind. "It was such a joyous [transition]," Kaufman, 25, exclusively told Us Weekly about season 5 of the hit Apple TV series. "I've been telling everybody that the only thing that I want to do in this career is things that scare me. I want to do complete 180s." Kaufman, who rose to stardom playing Steven on The Summer I Turned Pretty, appreciated the change, adding, "Anything that I don't know or anything that I am unaware of how to do [is something I want to try].