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Two new cargo spaceships are open for business at the International Space Station as a variety of new space research begins this week. The Expedition 61 crew has begun unpacking several tons new supplies from the U.S. and Russian space freighters.

Russia’s Progress 74 cargo craft automatically docked to the station’s Pirs docking compartment at 5:35 a.m. EST today after launching midday Friday. Cosmonauts Alexander Skvortsov and Oleg Skripochka opened the hatch shortly afterward and began retrieving critical research hardware for stowage on the orbiting lab.

The SpaceX Dragon resupply ship arrived at the station on Sunday for a capture and installation with the Canadarm2 robotic arm to the U.S. Harmony module. Commander Luca Parmitano joined NASA astronauts Jessica Meir and Andrew Morgan and quickly unpacked brand new science gear and rodents for observation aboard the space station.

NASA Flight Engineer Christina Koch worked throughout Monday juggling numerous science and cargo activities. She was offloading new Dragon supplies and housing lab rodents delivered aboard the U.S. cargo craft.

Meir and Morgan started Monday with ultrasound scans of their veins and eye pressure checks for the Fluid Shifts study. Meir with assistance from Koch in the afternoon installed a bone densitometer in Japan’s Kibo lab module that will measure bone loss in microgravity.

Traveling approximately 260 miles over the Yellow Sea east of Shanghai, the automated Russian Progress 74 cargo resupply spacecraft docked at 5:35 a.m. EST to the Pirs docking compartment on the Russian segment of the International Space Station.

It is the second resupply spacecraft to arrive for the six crew members aboard the space station in as many days. The Expedition 61 crew welcomed SpaceX’s cargo Dragon spacecraft early Sunday morning.

The International Space Station is a stepping stone for NASA’s Artemis program that will land the first woman and next man on the Moon. As the only place for conducting long-duration research on how living in microgravity affects living organisms as well as testing technologies to allow humans to work at the Moon, the space station serves as a unique asset in the effort establish a sustainable presence at the Moon and prepare for missions to Mars.

At 9 a.m., NASA Television and the agency’s website will broadcast a special event with NASA Administrator Jim Bridenstine as he discusses the status of the agency’s Artemis program, highlights the completion of the core stage for NASA’s Space Launch System (SLS) rocket that will help power the first Artemis mission to the Moon, and takes part in a question-and-answer session from NASA’s Michoud Assembly Facility in New Orleans.

Learn more about space station activities by following @space_station and @ISS_Research on Twitter, and the ISS Facebook and ISS Instagram accounts.