nasa astronaut Terry Virts tweeted this image in 2015, asking: "Can you spot the space walker in this picture? He's very small compared to the enormous starboard truss of the #ISS". ⁣ ⁣ What a scene! ⁣ ⁣ Follow nasa astronauts currently aboard space station at iss and nasajohnson where mission control for station is headquartered. ✨⁣ ⁣ Credit: NASA ⁣ ⁣ #nasa #humansinspace #astronauts #spacewalking #iss #spacestation