Human Research Underway as Station Awaits Boeing Starliner Mission

A portion of the station is silhouetted as it orbited 268 miles above the Pacific Ocean off the coast of Chile.
A portion of the space station is silhouetted as it orbited 268 miles above the Pacific Ocean.

Human research took precedence aboard the International Space Station on Tuesday as the seven-member Expedition 67 crew explored how living in space affects the human body. Meanwhile, Boeing’s first crew ship to visit the orbiting lab is targeted to launch late next week.

Exercise research and a central nervous system study were the main experiments today helping doctors learn how to keep astronauts healthy and successful during long-term space missions. NASA astronauts Kjell Lindgren, Bob Hines, and Jessica Watkins, took turns pedaling on an exercise cycle in the U.S. Destiny laboratory module throughout the day. The trio spent nearly an hour each working out while attached to sensors providing scientists insights into the aerobic capacity of a crew member in living and working weightlessness.

Lindgren later worked in the Tranquility module replacing components on the advanced resistive exercise device that simulates free-weight training on Earth. At the end of the day, he switched to a space botany study investigating hydroponic and aeroponic techniques to grow plants without soil.

Hines and Watkins also swapped a virtual reality headset in the Columbus laboratory module as they explored how the human brain adapts to the lack of up and down references in microgravity. Observations will help researchers understand how the lack of gravity affects the way astronauts reach for and grasp objects.

The three cosmonauts spent the majority of their time today working in the station’s Russian segment. Commander Oleg Artemyev partnered with Flight Engineer Denis Matveev servicing a variety of communications and life support hardware. Flight Engineer Sergey Korsakov worked on ventilation systems and an oxygen generator while also maintaining a pair of Russian laptop computers.

The next spacecraft to visit the space station, Boeing’s Starliner crew ship, is targeted to launch at 6:54 p.m. EDT on May 19 atop an Atlas-V rocket from United Launch Alliance. The unpiloted commercial crew vehicle will liftoff as part of Boeing’s Orbital Flight Test-2 from Cape Canaveral Space Force Station in Florida. It would dock to the Harmony module’s forward-facing port the next day and depart five to 10 days after that for a parachuted return to Earth.


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

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Expedition 67 Crew Takes a Day Off After Colleagues Arrive Home Safely

The Expedition 67 crew. From left to right: NASA astronaut Bob Hines; ESA astronaut Samantha Cristoforetti; Roscosmos cosmonauts Denis Matveev, Oleg Artemyev, and Sergey Korsakov; NASA astronauts Jessica Watkins and Kjell Lindgren.
The Expedition 67 crew. From left to right: NASA astronaut Bob Hines; ESA astronaut Samantha Cristoforetti; Roscosmos cosmonauts Denis Matveev, Oleg Artemyev, and Sergey Korsakov; NASA astronauts Jessica Watkins and Kjell Lindgren.

The seven Expedition 67 crew members are enjoying an off-duty day today following the change of command of the station and the departure of the SpaceX Crew-3 astronauts last week.

After a weekend that included housekeeping tasks and station maintenance, Expedition 67 Flight Engineer Kjell Lindgren performed a filter check on the Photocatalyst experiment on Monday. The Photocatalyst investigation, which was brought to the station by the Ax-1 mission, analyzes the photocatalyst’s effect onboard the International Space Station and its ability to remove volatile organic compounds (VOCs) from cabin air. This could improve conditions for crew members on future spaceflight missions, including long-duration missions.

Flight Engineer Bob Hines performed checks on the Cold Atom Lab. The Cold Atom Laboratory (CAL) produces clouds of atoms that are chilled to about one ten billionth of a degree above absolute zero — much colder than the average temperature of deep space. At these low temperatures, atoms have almost no motion, allowing scientists to study fundamental behaviors and quantum characteristics that are difficult or impossible to probe at higher temperatures. In microgravity, researchers may be able to achieve even colder temperatures than what is possible on the ground and observe these cold atom clouds for longer periods of time.

Flight Engineer Jessica Watkins performed equipment maintenance and prepared to work on the GRASP experiment with Bob Hines on Tuesday, while ESA astronaut Samantha Cristoforetti worked on a nutritional assessment.

In the station’s Russian segment, ISS Commander Oleg Artemyev and Flight Engineers Sergey Korsakov and Denis Matveev worked on equipment inspections and maintenance, prepared for a computer scan, and downlinked exercise data from the station.


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

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Station Crew Gets Back to Work After Crew-3 Mission Ends

SpaceX Crew-3 astronauts (from left) Matthias Maurer, Tom Marshburn, Raja Chari, and Kayla Barron, are pictured inside the Dragon Endurance vehicle after returning to Earth. Credit: NASA/Aubrey Gemignani
SpaceX Crew-3 astronauts (from left) Matthias Maurer, Tom Marshburn, Raja Chari, and Kayla Barron, are pictured inside the Dragon Endurance vehicle after returning to Earth. Credit: NASA/Aubrey Gemignani

The Expedition 67 crew was back to normal on Friday following the departure of four commercial crew astronauts early Thursday morning. The seven International Space Station astronauts and cosmonauts will live and work in space together until late summer.

The SpaceX Crew-3 mission ended at 12:43 a.m. EDT on Friday when the Dragon Endurance crew ship splashed down off the coast of Tampa, Florida. Nearly 24 hours earlier, Crew-3 Commander Raja Chari with Pilot Tom Marshburn and Mission Specialists Kayla Barron and Matthias Maurer undocked from the Harmony module’s forward port inside Dragon.

After saying farewell to the Crew-3 astronauts early Thursday, the orbiting lab’s four newest astronauts, who arrived the week before aboard the Dragon Freedom spaceship, closed the station’s hatches, went to bed about two hours later, and took the rest of the day off.

On Friday, NASA Flight Engineer Kjell Lindgren, who is one week into his second spaceflight, stowed emergency gear and checked out hydroponic hardware for the XROOTS space botany study. ESA (European Space Agency) Flight Engineer Samantha Cristoforetti, who is also on her second mission, spent her day maintaining orbital plumbing systems.

First time space-flyers Bob Hines and Jessica Watkins partnered once again in the Columbus laboratory module studying how the central nervous system adapts to weightlessness. Hines and Watkins were both selected as members of the 2017 class of astronaut candidates in August of the same year.

The station’s new commander, Oleg Artemyev, started his day installing video gear before continuing his weeklong research on ways to maximize the effectiveness of a space workout. Roscosmos Flight Engineer Sergey Korsakov also participated on the space exercise study before working on networking equipment. Roscosmos Flight Engineer Denis Matveev checked out systems inside the Rassvet and Zarya modules before performing Russian orbital maintenance tasks.


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

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The Station Changes Command as Crew-3 Prepares to Depart

NASA astronaut Tom Marshburn handed over command of the International Space Station to Russian cosmonaut Oleg Artemyev in a traditional Change of Command ceremony today ahead of Crew-3’s departure tonight. Credit: NASA TV.
NASA astronaut Tom Marshburn handed over command of the International Space Station to Russian cosmonaut Oleg Artemyev in a traditional Change of Command ceremony today ahead of Crew-3’s departure tonight. Credit: NASA TV.

NASA astronaut Tom Marshburn handed over command of the International Space Station to Russian cosmonaut Oleg Artemyev in a traditional Change of Command ceremony which began at 2:35 p.m. EDT today. Artemyev, a veteran of three spaceflights to the space station, will lead the Expedition 67 crew until the end of summer.

Marshburn and his Crew-3 crewmates Kayla Barron, Raja Chari, and ESA astronaut Matthias Maurer have been living aboard the orbital lab since November 11, 2021, and are set to depart tonight. Hatch closure is set for 11:20 p.m. EDT, with undocking following at 1:05 a.m. EDT. The commercial crew quartet is due to splashdown off the coast of Florida  at 12:43 a.m. EDT on Friday, May 6. Watch live on NASA TV, the agency’s website, and the app.

The Crew-3 astronauts worked on final Dragon cargo operations and configuring Dragon for departure, final egress, and hatch closure, as well as transferring emergency hardware from Dragon to the space station prior to departure. The Endurance crew closed out research operations which included transferring and packing frozen samples and ice bricks from the Minus Eighty (Degrees Celsius) Laboratory Freezer for ISS (MELFI) into coldbags in preparation for the return to Earth. MELFI provides the space station storage and fast-freezing of life science and biological samples. The Crew-3 astronauts also removed and stowed their Actiwatches, small, lightweight, wrist-worn devices that simultaneously detect body movement and light intensity. They are used to evaluate sleep-wake adaptation and circadian cycle and determine if space travel has an impact on the sleep-wake patterns of crewmembers.

The station’s four newest astronauts, Kjell Lindgren, Bob Hines, Jessica Watkins, and Samantha Cristoforetti, had a light duty day performing some life science, lab maintenance, and inventory tasks. The foursome and their three Russian crewmates are due to have an off-duty day following the departure of the SpaceX Crew-3 mission.

In the station’s Russian segment, Artemyev and Flight Engineers Sergey Korsakov and Denis Matveev performed monthly maintenance checks on laptops and video equipment, as well as physical training, and a robotic piloting experiment.


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

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Station Crew Changes Command on Tuesday Ahead of Departure

This mosaic depicts the space station pictured from the SpaceX Crew Dragon Endeavour on Nov. 8, 2021.
This mosaic depicts the space station pictured from the SpaceX Crew Dragon Endeavour on Nov. 8, 2021.

Four astronauts who have been aboard the International Space Station since November continue to prepare for their return to Earth. This comes at the same time as four new astronauts are beginning their mission and getting used to living and working aboard the orbiting lab.

Expedition 67 Commander Tom Marshburn is getting ready to hand over station control to Roscosmos Flight Engineer Oleg Artemyev. The traditional change of command ceremony will take place Tuesday at 2:45 p.m. EDT live on NASA TV’s app and website, when the station’s nine flight engineers witness Marshburn handing over the station’s leadership role to Artemyev.

In the meantime, Marshburn and Flight Engineers Raja Chari, Kayla Barron, and Matthias Maurer, are packing up and preparing for their return to Earth. The quartet will board the SpaceX Dragon Endurance later this week then undock from the Harmony module’s forward port ending their stay on the space station. Chari will command the ride back home when the foursome parachutes to a splashdown off the coast of Florida about a day after undocking.

Meanwhile, the station’s four newest crew members, who have been on the station less than a week, are kicking off their first science experiments while also getting up to speed with lab systems and operations.

NASA’s first time space-flyers Robert Hines and Jessica Watkins worked in the Columbus laboratory module on Monday and explored how microgravity affects their dexterous manipulation. NASA Flight Engineer Kjell Lindgren, on his second mission, collected and stored his blood and urine samples then spent the rest of the day on station familiarization and handover activities. ESA (European Space Agency) Flight Engineer Samantha Cristoforetti serviced life support equipment while also spending time adapting to life on the space station.

Artemyev, on his third space station mission, is about to take command of the Expedition 67 crew until late summer. Today, he worked on a pair of Russian experiments exploring future spacecraft and robotic piloting techniques, as well as effective ways to exercise in weightlessness. Flight Engineer Denis Matveev inspected the ISS Progress 80 cargo craft then continued cleaning up after April 28’s spacewalk to activate the European robotic arm. Flight Engineer Sergey Korsakov swapped out a Russian computer before participating in more space exercise research at the end of the day.

Ax-1 Departure and Spacewalk Preps Wrap Up Work Week

The full quarter Moon is pictured from the International Space Station as it orbited 261 miles above the Gulf of Mexico off the coast of Pensacola, Florida on April 9, 2022.
The full quarter Moon is pictured from the International Space Station as it orbited 261 miles above the Gulf of Mexico off the coast of Pensacola, Florida on April 9, 2022.

The Expedition 67 crew is gearing up for the departure of the first private astronaut mission and another spacewalk at the International Space Station. There was still time onboard the orbiting lab on Friday for biomedical science to understand how the human body adapts to microgravity.

NASA’s station Commander Tom Marshburn spent some time on Friday assisting the four outgoing Axiom Mission 1 (Ax-1) crew members. The first private space quartet is getting ready to end a two-week stay at the station this weekend. Ax-1 Commander Michael Lopez-Alegria will board the SpaceX Dragon Endeavour with Pilot Larry Connor and Mission Specialists Mark Pathy and Eytan Stibbe and close the hatch at 4:30 p.m. EDT on Saturday. The four Ax-1 astronauts will then undock at 6:35 p.m. from the Harmony module’s space-facing port for splashdown on Sunday off the coast of Florida.

The next mission event planned at the station is the fifth spacewalk of the year for more maintenance and upgrades at the station. Roscosmos cosmonauts Oleg Artemyev and Denis Matveev will partner up once again on April 28 to continue activating the European robotic arm (ERA) attached to the Nauka multipurpose laboratory module.

The duo joined their fellow cosmonaut Sergey Korsakov on Friday morning and reviewed the tasks planned for the upcoming spacewalk. That excursion will see the ERA’s first motion setting up the manipulator for future robotic activities on the station’s Russian segment. The trio then spent the rest of Friday on a variety of inspection and maintenance tasks.

Flight Engineers Kayla Barron of NASA and Matthias Maurer of ESA (European Space Agency) processed blood and urine samples during the morning for later analysis. NASA Flight Engineer Raja Chari worked on life support gear then joined Marshburn for pre-departure activities inside the Dragon Endurance crew ship.


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

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Station Crew Busy with Research as Managers Work Ax-1, Crew-4 Missions

The SpaceX Dragon Endurance crew ship is pictured from a window aboard the SpaceX Dragon Endeavour crew ship.
The SpaceX Dragon Endurance crew ship is pictured from a window aboard the SpaceX Dragon Endeavour crew ship.

The four private astronauts from Axiom Space are now due to depart the International Space Station on Saturday night and return to Earth the next day. Four commercial crew astronauts are also looking ahead to their mission aboard the orbiting lab set to begin after the Axiom Mission 1 (Ax-1) crew departs.

NASA, SpaceX and Axiom Space are planning for the Ax-1 crew to undock from the station inside the Dragon Endeavour crew ship on Saturday at 6:35 p.m. EDT. Ax-1 Commander Michael Lopez-Alegria will lead Pilot Larry Connor and Mission Specialists Mark Pathy and Eytan Stibbe back to Earth inside Endeavour for a splash down at 1:46 p.m. on Sunday off the coast of Florida.

The SpaceX Crew-4 mission awaits its launch date as mission managers monitor weather conditions at the Ax-1 splashdown site and review mission data after Endeavour’s return. The Falcon 9 rocket that will the launch the Crew-4 astronauts to space inside the Dragon Freedom crew ship successfully fired its nine Merlin engines on Wednesday during its static fire test. In the meantime, Crew-4 Commander Kjell Lindgren with Pilot Robert Hines and Mission Specialists Jessica Watkins and Samantha Cristoforetti, continue training for their mission while in quarantine at the Kennedy Space Center in Florida.

Operations on the station continue normally, as the four Expedition 67 astronauts worked on an array of space research on Thursday. Commander Tom Marshburn of NASA joined ESA (European Space Agency) Flight Engineer Matthias Maurer for muscle measurements and ultrasound scans. The duo contributed to the Myotones human research experiment to understand how weightlessness affects the biochemical properties of muscles. NASA Flight Engineers Kayla Barron and Raja Chari collected blood and urine samples and stowed them in science freezer for future analysis for more insights into spaceflight’s impact on the human body. The quartet also checked out their Dragon spacesuits as they look ahead to their departure inside the Dragon Endurance soon after the Crew-4 astronauts begin their station mission.

The three cosmonauts living and working on the orbital lab focused on their suite of science and upkeep tasks. Veteran cosmonaut Oleg Artemyev studied piloting techniques that may be used on future planetary or robotic missions. Roscosmos Flight Engineer Denis Matveev attached a heart monitor to himself then photographed the condition of Russian module windows. Roscosmos Flight Engineer Sergey Korsakov pursued cardiac research during the morning before working on Russian life support and photography gear.

Station Crew Awaits Ax-1 Departure and Crew-4 Launch

International Space Station Configuration. Six spaceships are parked at the space station including the SpaceX Dragons Endurance and Endeavour; the Northrop Grumman Cygnus space freighter; and Russia's Soyuz MS-21 crew ship and the Progress 79 and 80 resupply ships.
International Space Station Configuration. Six spaceships are parked at the space station including the SpaceX Dragons Endurance and Endeavour; the Northrop Grumman Cygnus space freighter; and Russia’s Soyuz MS-21 crew ship and the Progress 79 and 80 resupply ships.

The integrated NASA, Axiom Space, and SpaceX teams have agreed on a plan for the Axiom Mission 1 (Ax-1) crew to undock from the International Space Station at 8:35 p.m. EDT Saturday, April 23, for a splashdown off the coast of Florida about 1:46 p.m. Sunday, April 24. The decision was made based on the best weather for splashdown of the first private astronaut mission to visit the International Space Station and the return trajectory required to bring the crew and the SpaceX Dragon Endeavour spacecraft back to Earth safely.

NASA will provide live coverage of departure activities beginning at 6:15 p.m. Saturday, April 23, with hatch closure targeted for 6:30 p.m. Coverage will resume at 8:15 p.m. for the undocking. Teams will continue to monitor weather at the splashdown sites prior to undocking to ensure conditions are acceptable for a safe recovery of the Ax-1 astronauts and Dragon spacecraft.

NASA and Axiom mission planning prepared for the possibility of additional time on station for the private astronauts, and there are sufficient provisions for all 11 crew members aboard the space station. The Ax-1 crew continues to work through previously planned mission activities. The Ax-1 crew and Dragon spacecraft remain healthy.

The departure of Dragon Endeavour from the space station will clear the docking port for the arrival of Dragon Freedom and NASA’s SpaceX Crew-4 astronauts. The earliest potential launch opportunity for the Crew-4 mission is 4:15 a.m. Tuesday, April 26, with additional opportunities Wednesday, April 27, and Thursday, April 28. These launch opportunities are undergoing a more detailed program review to ensure they align with integrated operational timelines. The teams want to provide a two-day gap after Ax-1 return for data reviews from splashdown and to prepare for the Crew-4 launch, including the staging of recovery assets.

The Crew-4 astronauts spent last night at the Kennedy Space Center in Florida rehearsing the countdown to their launch inside the SpaceX Dragon Freedom, the company’s newest crew ship. Overnight, Crew-4 Commander Kjell Lindgren, Pilot Robert Hines with Mission Specialists Jessica Watkins and Samantha Cristoforetti, put on their pressure suits and entered their vehicle conducting a successful dry dress rehearsal. The Falcon 9 rocket, with the Freedom perched atop, stands at Launch Complex 39A.

Expedition 67 crewmates Raja Chari and Tom Marshburn, who are also the SpaceX Crew-3 commander and pilot respectively, spent a little time on Wednesday with their upcoming departure activities. The pair, along with Kayla Barron of NASA and Matthias Maurer of ESA, will wait for the arrival of their Crew-4 replacements before returning to Earth a few days later inside the Dragon Endurance vehicle. The four astronauts had a light-duty day on Wednesday scheduling in some housecleaning tasks.

Over in the Russian segment of the station, cosmonauts Oleg Artemyev and Denis Matveev wrapped up their post-spacewalk activities today stowing their tools and discussing the excursion with specialists on the ground. The duo kicked off a series of spacewalks on April 18 to configure the European robotic arm for operations on the Nauka multipurpose laboratory module. Roscosmos Flight Engineer Sergey Korsakov started his day with electronics and communications maintenance before studying future spacecraft and robotic piloting techniques in the afternoon.

Ax-1 Crew Preps for Departure as Crew-4 Mission Nears Launch

The Expedition 67 crew said farewell to the Axiom Mission 1 crew today ahead of their departure planned for Tuesday night.
The Expedition 67 crew said farewell to the Axiom Mission 1 crew today ahead of their departure planned for Tuesday night.

Commander Tom Marshburn of NASA joined his six Expedition 67 flight engineers and held a farewell ceremony for the four-member Axiom Mission 1 (Ax-1) crew on Tuesday morning. At the same time back on Earth, four SpaceX Crew-4 astronauts arrived at the Kennedy Space Center in Florida to prepare for their launch to the International Space Station this weekend.

Watch the Axiom Mission 1 farewell ceremony on YouTube.

Marshburn called down to Mission Control today to recognize the contribution the four Ax-1 private astronauts have made to human spaceflight. The private quartet then spoke about the research and education events they conducted and thanked the Expedition 67 crew for hosting and guiding them during their 10-day stay on the station. Ax-1 Commander Michael Lopez-Alegria will lead Pilot Larry Connor and Mission Specialists Mark Pathy and Eytan Stibbe back to Earth inside the SpaceX Dragon Endeavour. They will undock from the Harmony module’s space-facing port at 10 p.m. EDT today live on NASA TV on NASA’s website and the app. The foursome will splashdown off the coast of Florida on Wednesday afternoon.

The current seven-member Expedition 67 crew will sleep in on Wednesday following the late night departure of the Ax-1 crew. The four astronauts and three cosmonauts will get right back to work on Thursday with more science and maintenance. Marshburn and NASA Flight Engineers Raja Chari and Kayla Barron along with ESA (European Space Agency) Flight Engineer Matthias Maurer will also check out their Crew Dragon suits ahead of their departure aboard the SpaceX Dragon Endurance in a couple of weeks. Roscosmos Flight Engineers Oleg Artemyev, Denis Matveev, and Sergey Korsakov will tend to their complement of Russian space research and lab upkeep tasks.

The station will stay at a seven-member crew status for just a few days until the arrival of the SpaceX Crew-4 mission. Four commercial crew astronauts representing NASA and ESA are scheduled to launch at 5:26 a.m. EDT on Saturday from Kennedy inside the SpaceX Dragon Freedom crew ship and dock to the same port vacated by the Ax-1 mission on Sunday at 6 a.m. The quartet commanded by NASA’s Kjell Lindgren, with Pilot Robert Hines and Mission Specialists Jessica Watkins of NASA and ESA’s Samantha Cristoforetti, will live and work aboard the orbiting lab for just over four-and-a-half months. The Crew-4 astronauts will become Expedition 67 flight engineers after they open the hatches and enter the space station.


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

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Station Looks to Spacewalk, Crew Departure and Arrival

The SpaceX Dragon Endeavour crew ship that carried four Axiom Mission 1 astronauts to the space station is pictured docked to the Harmony module.
The SpaceX Dragon Endeavour crew ship that carried four Axiom Mission 1 astronauts to the space station is pictured docked to the Harmony module.

The Expedition 67 crew is heading into a busy period next week that begins with a Russian spacewalk, followed by the departure of four private astronauts and the launch of the SpaceX Crew-4 mission. Meanwhile, the residents aboard the International Space Station continued a broad array of research to understand what happens to the human body during a long-term space flight.

Two cosmonauts are getting ready for Monday’s spacewalk set to begin at 10:25 a.m. EDT to activate the European Robotic Arm (ERA) on the outside of the Nauka multipurpose laboratory module. Roscosmos Flight Engineers Oleg Artemyev and Denis Matveev will go into the weekend reviewing their procedures planned for the six-and-a-half-hour spacewalk. On Monday, the duo will exit the Poisk module, translate to Nauka, and install the ERA control panel and other components on the outside of the orbiting lab’s Russian segment.

The next day, four Axiom Mission 1 (Ax-1) astronauts will end their space research and education mission aboard the orbiting lab. Commander Michael Lopez-Alegria will lead Pilot Larry Connor and Mission Specialists Eytan Stibbe and Mark Pathy inside Space Dragon Endeavour when they undock from the Harmony module’s space-facing port on Tuesday at 10:35 a.m. The private foursome will splashdown off the coast of Florida on Wednesday morning completing a 12-day mission in space.

The Ax-1 quartet had a packed schedule on Friday conducting a host of microgravity science. Lopez-Alegria and Connor took turns scanning each other’s heart using the Ultrasound 2 device for the Cardioprotection study. Stibbe explored genetic identification and tested the comfort of a specialized radiation protection vest. Pathy continued his Earth photography sessions while also testing a different vest that monitors vital signs in real-time while an astronaut comfortably works on the station.

The four Expedition 67 astronauts from NASA and ESA (European Space Agency) continued their complement of space research and lab maintenance while assisting the Ax-1 crew. Commander Tom Marshburn scanned the eyes of Pathy using medical imaging gear to understand how weightlessness affects an astronaut’s vision. Flight Engineer Raja Chari packed cargo inside the SpaceX Dragon Endurance and inspected the vehicle’s hatch while NASA Flight Engineer Kayla Barron spent Friday cleaning crew quarters and performing orbital plumbing duties. Astronaut Matthias Maurer videotaped an educational event for German students demonstrating the CIMON mobile artificial intelligence companion.

Finally, four SpaceX Crew-4 astronauts are in quarantine counting down to a liftoff aboard the Dragon Freedom crew ship from Florida at 5:26 a.m. EDT on April 23. Commander Kjell Lindgren will lead Pilot Robert Hines and Mission Specialists Jessica Watkins and Samantha Cristoforetti on a ride to the station’s Harmony module where they will dock just over 24 hours later.