For the third week in a row, a spacewalk is taking place at the International Space Station.

Two Russian Federal Space Agency cosmonauts are conducting a spacewalk outside the ISS Wednesday.

Expedition 41 Commander Max Suraev and Flight Engineer Alexander Samokutyaev will remove and jettison several pieces of hardware no longer needed on the Russian segment of the station.

They will also conduct a detailed photographic survey of the exterior surface of the Russian modules.

Last week NASA astronauts Reid Wiseman and Butch Wilmore ventured out to replace a failed electrical device. The week before that American Reid Wiseman and German Alexander Gerst, both first-time spacewalkers, moved an old, broken pump into permanent storage.