The Progress 77 Will Later Detach Pirs From The Station

Russia’s Progress 77 cargo rocket launched from its launch pad at the Baikonur Cosmodrome in Kazakhstan on Feb 14., 2021.

An uncrewed Russian Progress 77 carrying just over one ton of nitrogen, water and propellant to the International Space Station launched from the Baikonur Cosmodrome in Kazakhstan at 11:45 p.m. EST (9:45 a.m. Monday, Feb. 15, Baikonur time).

The resupply ship reached preliminary orbit and deployed its solar arrays and navigational antennas as planned for a two-day rendezvous on its way to meet up with the orbiting laboratory and its Expedition 64 crew members. After making 33 orbits of Earth on its journey, the spacecraft will automatically dock to the station’s Pirs docking compartment on the Russian segment at 1:20 a.m. Wednesday, Feb. 17.

The Progress 77 will later detach Pirs from the station readying the Zvezda service module’s port for a new module. Pirs will then be replaced with the Nauka multipurpose laboratory module to be delivered on a Proton rocket. The Pirs undocking occurs a few days after Nauka’s launch to enable Russian flight controllers to confirm a good vehicle in orbit heading to the station.

In the meantime, science is the main mission aboard the station. Microgravity research has the potential to reveal new insights and potential therapies that otherwise wouldn’t be possible on Earth due to gravity’s interference.

NASA Flight Engineers Michael Hopkins and Victor Glover partnered up on Friday for a pair of different experiments. The duo demonstrated how hydroponics may support space agriculture then explored how the human nervous system adapts to weightlessness.

Astronauts Kate Rubins of NASA and Soichi Noguchi of JAXA joined each other for maintenance work inside the Tranquility module. Rubins also collected microbe samples to understand how they survive and adapt on the station. NASA Flight Engineer Shannon Walker spent the day working on batteries that keep life support systems powered inside U.S. spacesuits.

Cosmonauts Sergey Ryzhikov and Sergey Kud-Sverchkov continued studying how the lack of gravity impacts the effectiveness of a workout. Ryzhikov also checked seating inside the Soyuz MS-17 crew ship as Kud-Sverchkov worked on ventilation and radiation hardware.

FMI: www.nasa.gov