Expedition 70 on ISS: Spacewalk Prep, Coolant Concerns, CEVIS Systems, and CIPHER Studies

NASA astronaut Frank Rubio considers himself 'incredibly lucky' after accidental 1-year ISS stay

Expedition 70 Flight Engineers Jasmin Moghbeli and Loral O’Hara

A leak on the ISS canceled his spacewalk. But an astronaut says that was the right call