At the time of writing, Williams and ISS crewmate, Nick Hague, are conducting NASA’s first spacewalk in over a year. The pair are scheduled to spend roughly 6.5 hours in the vacuum of space, where they will work on a number of long overdue external repairs and equipment assessments.

The two astronauts have a busy day ahead of them. Hague and Williams will "patch light leaks in the NICER X-ray telescope, then ready the Alpha Magnetic Spectrometer for future upgrades," NASA officials wrote in a Jan. 15 blog post.

Two NASA astronauts have carried out repair work on the International Space Station (ISS) during a spacewalk, the US space agency said on Thursday. During the six-hour mission, astronauts Suni Williams and Nick Hague replaced faulty light filters and reflectors,