By Alexander Sapov This article is the fourth in a four-part series, aiming to provide an authoritative analysis of ISS vs.

NASA astronauts Anne McClain and Nichole Ayers are set to begin their spacewalk on Thursday at 8 a.m. ET, exiting the space station for a planned six hours and 35 minutes. NASA will broadcast the ...

NASA astronaut Don Pettit has 30 years of being an astronaut under his belt, and in a recent interview, he revealed a unique ...