The 50th International Space Station expedition came to an end this morning, as Shane Kimbrough, Sergey Ryzhikov and Andrey Borisenko landed in Kazakhstan at 7:20 a.m. EDT (11:20 UTC). They leave behind Peggy Whitson, who just received a three-month mission extension, along with Thomas Pesquet and Oleg Novitskiy.

I believe Expedition 50 had a fun and good ISS crew. I base this declaration solely on the moments they shared on social media during the past six months. This logic is completely bulletproof and there's no point trying to prove otherwise.

Suppose you find yourself in low-Earth orbit with a team of fellow astronauts, zipping around the Earth at a clip of 7.7 kilometers per second, and you ask yourself: "Is this a fun and good ISS crew?" Here are some was to tell.

You have solid game faces.