Commander Sunita Williams and Butch Wilmore floated out to perform maintenance work and wipe the International Space Station’s exterior for evidence of any microbes that may still be alive after launching from Earth and escaping through vents.

NASA astronauts Sunita Williams and Butch Wilmore, stranded on the ISS for months, stepped out for their first spacewalk on Thursday.

NASA astronauts Sunita Williams and Barry Wilmore will go on a spacewalk. The live coverage of the spacewalk will take place at 17:00 hours IST