Watch: NASA documentary 'Suit Up' commemorates 50 years of spacewalks

Representational image. AP[/caption]NASA has made a documentary celebrating 50 years of extra-vehicular activity (EVA) or spacewalks. The first two spacewalks were done by Russian Alexey Leonov in March 1965 and American astronaut Edward White in June 1965."I look down, and the Earth is down here. I hurry and get back and do some more things. And I had another rest period. And so, this time, I took one foot out...and I looked...uh-oh, the earth's not there. Oh, there it is...up there," said Buzz Aldrin, the legendary astronaut who was the second person to set foot on the moon, after Neil Armstrong."To be in the space suit outside and to look out in any direction was pretty neat," said Indian-origin astronaut Sunita Williams.As the documentary goes through the history of spacewalks right from the days of space exploration rising out of the Cold War rivalry, you can't help but feel a rush of excitement as the documentary tells you exactly how much mankind has achieved in these last 50 years, as scientists are now talking about astronauts walking on Mars.