The first part of the spacewalk was to replace the three RSUs, each of which contains two gyroscopes.

BBC: Hubble gyros fixed after struggle

Monday's spacewalk was the first of two excursions by the station's crew this month.

MSN: Spacewalker tosses out real-life 'Spaceball' - Technology & science - Space - Space.com | NBC News

Mr Jing, 46, is making his second spaceflight after participating in the Shenzhou-7 outing in 2008 - the mission that included China's first spacewalk.

BBC: China launches space mission with first woman astronaut