NASA astronauts Sunita "Suni" Williams and Barry "Butch" Wilmore surely didn't think they'd still be on the International Space Station this long when they left Earth in June. In fact, they initially expected to stay for just eight days.

The survival of organisms in the vacuum of space could support the theory that life didn't start on Earth, but originated elsewhere in the galaxy.

Astronauts are scheduled to venture outside the International Space Station to collect microbiological samples during crew spacewalks for the ISS External Microorganisms experiment. This investigation focuses on sampling at sites near life support system vents to examine whether the spacecraft releases microorganisms,

Learning how to deal with the microorganisms hitching a ride with humans Two NASA astronauts are set to venture outside the International Space Station (ISS) in search of signs of life.… Butch Wilmore and Suni Williams should have been back on Earth months ago,