NASA has confirmed that the un-piloted Russian Progress 77 cargo spacecraft has been undocked from the worldwide house station. The largest distinction between this undocking and a lot of different undockings which have occurred on the Pirs docking compartment over its lifetime is that the docking compartment indifferent from the ISS together with the cargo spacecraft. The undocking occurred at 6:55 AM EDT on July 26.
The spacecraft will reenter the Earth’s environment and dissipate within the sky over the South Pacific. Progress 77 launched and docked with the ISS in February, bringing greater than a ton of cargo to the crewmembers aboard the orbiting house station on the time. The elimination of the Pirs docking station is historic for the ISS, and sadly, the deorbit and reentry gained’t be lined on NASA TV.
The departure of the cargo spacecraft and the docking port leaves the Earth-facing facet of the Russian section of the station prepared to simply accept the brand new Russian Multipurpose Laboratory Module (MLM). After years of delays, that module is scheduled to dock with the house station on Thursday, July 29. The brand new module known as Nauka, which is the Russian phrase for science.
The module launched on July 21 and can function a brand new science facility, docking port, and spacewalk airlock for future operations aboard the ISS. NASA will air protection of the brand new MLM docking with the ISS starting at 8:30 AM on Thursday, July 29, with the docking anticipated to happen at 9:25 AM. Pirs has been a part of the house station since September 2001 and was a docking port for Russian spacecraft and an airlock for Russian spacewalks.
Pirs needed to depart the station for the brand new laboratory module to be connected. MLM beforehand deployed its photo voltaic arrays and navigational antennas as deliberate. It spent eight days in free flight permitting Russian flight controllers to guage programs on the module. MLM is 43 toes lengthy and weighs 23 tons, it is going to connect to the identical ISS port Pirs departed.