Russia delays detaching old space station docking port while testing new research module in orbit

The departure of Russia's Pirs module from the International Space Station has been delayed until Saturday (July 24) as engineers continue to conduct in-flight tests on its replacement. The 20-year-old Pirs was scheduled to leave the orbiting lab tomorrow (July 23) to open a slot for the Russian Multipurpose Research Module, also known as Nauka, which launched on Wednesday (July 21). But the 22-ton (20 tonnes) Nauka has experienced a few issues during its journey to the orbiting lab, necessitating a change of plans. More

(Source: Space.com - Jul 24)