Muscle, Bone, and Blood Studies on Station Promoting Space and Earth Health

Muscle, Bone, and Blood Studies on Station Promoting Space and Earth Health

City lights dot the Canadian landscape underneath an atmospheric glow and an aurora borealis in this photograph taken from the International Space Station 262 miles above North America at approximately 12:15 a.m. local time.
City lights dot the Canadian landscape underneath an atmospheric glow and an aurora borealis in this photograph taken from the International Space Station 262 miles above North America at approximately 12:15 a.m. local time.
NASA

The Expedition 72 crew with its four newest members is returning to science operations following a busy period of crew swap activities. Human research was Thursday’s main focus as the International Space Station residents studied how living in space affects bones, muscles, and brain blood flow.

Astronauts are living in space for months at a time and scientists have been continuously studying how their bodies adapt to weightlessness. Results are especially important as NASA and its international partners plan long-duration crewed missions to the Moon, Mars, and beyond that are less dependent on Earth.

NASA Flight Engineer Nichole Ayers processed her blood samples for analysis to understand and treat space-caused bone loss as well as bone conditions on Earth such as osteoporosis. Veteran NASA Flight Engineer Don Pettit worked out on the advanced resistive exercise device for an investigation exploring how exercising during spaceflight impacts the muscles and bones.

A new experiment on the orbital outpost, Drain Brain 2.0, is investigating how blood flows from a crew member’s brain toward the heart in microgravity. Flight Engineer Takuya Onishi from JAXA (Japan Aerospace Exploration Agency) attached sensors and electrodes to his neck and chest for the human research study. The experiment measures blood volume changes in the neck to assess the risk of cardiovascular conditions during spaceflight. Results may improve health screening in space for astronauts and benefit patients with heart problems on Earth.

NASA Flight Engineer Anne McClain who is on her second space station mission joined Pettit during the first part of the day configuring the SpaceX Dragon crew spacecraft for docked operations. At the end of her shift on Thursday she joined Ayers, Onishi, and Roscosmos cosmonaut Kirill Peskov and reviewed emergency hardware location and usage procedures. Pettit and station Commander Alexey Ovchinin assisted the new crewmates who are still in their first week aboard the orbiting lab.

Ovchinin also participated in space biology research on Thursday with fellow Roscosmos cosmonaut Ivan Vagner. The duo, who have been aboard the station with Pettit since Sept. 11, 2024, collected blood pressure measurements for an investigation exploring blood circulation in microgravity. Peskov inspected video recording equipment before continuing his familiarization with life on orbit.

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

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Mark A. Garcia

Four New Crewmates Adjust to Station Life Following Crew-9 Return

Four New Crewmates Adjust to Station Life Following Crew-9 Return

NASA astronaut and Expedition 72 Flight Engineer Suni Williams peers at the Earth below from inside the International Space Station's cupola. The orbital outpost was soaring 260 miles above the Indian Ocean at the time of this photograph.
iss072e742802 (March 9, 2025) — NASA astronaut and Expedition 72 Flight Engineer Suni Williams peers at the Earth below from inside the International Space Station’s cupola. The orbital outpost was soaring 260 miles above the Indian Ocean at the time of this photograph.

Four Expedition 72 crewmates are getting used to life aboard the International Space Station following their arrival on Saturday and the departure of the SpaceX Crew-9 mission on Tuesday. Meanwhile, a U.S. cargo craft is poised to be released from the orbital outpost ending a seven-and-a-half-month stay.

New NASA Flight Engineers Anne McClain and Nichole Ayers began Wednesday unpacking cargo stowed inside the SpaceX Dragon Endurance spacecraft. Afterward, the duo transferred standard emergency hardware from the station into Dragon and reconfigured the spacecraft for docked operations. After a midday meal McClain and Ayers spent the rest of the day getting used to life on orbit and familiarizing themselves with space station systems.

Their SpaceX Crew-10 crewmates, Takuya Onishi of JAXA (Japan Aerospace Exploration agency) and Kirill Peskov of Roscosmos also participated in Dragon cargo transfers and station orientation activities. Onishi helped unpack Dragon, reviewed upcoming science operations, then worked out on the advanced resistive exercise device. Kirill tested computers that receive video from the European robotic arm, worked on life support systems, then got up to speed with life in microgravity.

The new Crew-10 quartet replaces the Crew-9 mission which undocked from the Harmony module early Tuesday in the Dragon spacecraft and splashed down off the coast of Florida near Tallahassee on the same day. NASA’s SpaceX Crew-9 commander Nick Hague returned to Earth with NASA astronauts Suni Williams and Butch Wilmore and Roscosmos cosmonaut Aleksandr Gorbunov. Hague and Gorbunov completed a 171-day mission that began on Sept. 28, 2024. Williams and Wilmore wrapped up 286 days in space following their mission that began on June 5, 2024.

One more spacecraft is due to depart the International Space Station this week as the Cygnus space freighter nears the end of its cargo mission that began on Aug. 4, 2024. The uncrewed, trash-filled Cygnus is due to be removed by the Canadarm2 robotic arm from the Unity module’s Earth-facing port then released into Earth orbit at 7:55 a.m. EDT on Friday. Cygnus will reenter Earth’s atmosphere above the South Pacific Ocean two days later for a fiery, but safe demise.

The station’s other three residents have been orbiting Earth since Sept. 11, 2024, when they launched from Kazakhstan and docked to the Rassvet module aboard the Soyuz MS-26 crew ship. Now, NASA Flight Engineer Don Pettit and Roscosmos cosmonauts Alexey Ovchinin and Ivan Vagner are approaching the end of their mission scheduled for April 19. When they undock from the station in their Soyuz spacecraft Expedition 73 will officially begin.

First up will be the arrival of the Soyuz MS-27 spacecraft due to launch on April 8 carrying NASA astronaut Jonny Kim and Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky. Kim and Zubritsky will be beginning their first space mission while Ryzhikov will be serving on his third expedition to the orbiting lab.

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

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Mark A. Garcia

NASA’s SpaceX Crew-9 Splashes Down Off Coast of Florida

NASA’s SpaceX Crew-9 Splashes Down Off Coast of Florida

The SpaceX Dragon Freedom spacecraft is seen after it splashed down in the Gulf of America, off the coast of Tallahassee, Florida, at 5:57 p.m. EDT, returning Crew-9 to Earth.
NASA

NASA astronauts Nick Hague, Suni Williams, and Butch Wilmore, and Roscosmos cosmonaut Aleksandr Gorbunov have successfully splashed down in the Gulf of America, off the coast of Tallahassee, Florida, at 5:57 p.m. EDT. 

Hague and Gorbunov have been at the International Space Station since  Sept. 29, 2024, while Williams and Wilmore arrived on June 6. This completes a stay in space of 171 days for Hague and Gorbunov and 286 days for Williams and Wilmore.  

Teams on the SpaceX recovery ship, including two fast boats, are securing Dragon and ensuring the spacecraft is safe for recovery. As the fast boat teams complete their work, the recovery ship will move into position to hoist Dragon onto the main deck with the Crew-9 crew members inside. Once on the main deck, the crew will exit the spacecraft and undergo medical checks before a short helicopter ride to board a plane for NASA’s Johnson Space Center in Houston. 

NASA and SpaceX will host a media news conference at 7:30 p.m. to discuss the undocking and splashdown with the following participants:  

  • Joel Montalbano, deputy associate administrator, NASA’s Space Operations Mission Directorate 
  • Steve Stich, manager, NASA’s Commercial Crew Program 
  • Bill Spetch, operations integration manager, NASA’s International Space Station Program 
  • Sarah Walker, director, Dragon Mission Management, SpaceX 

Live coverage of the news conference will air on NASA+. Learn how to  stream NASA content  through a variety of platforms, including social media. 

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Elyna Niles-Carnes

NASA’s SpaceX Crew-9 Return Continues, Dragon Completes Deorbit Burn

NASA’s SpaceX Crew-9 Return Continues, Dragon Completes Deorbit Burn

NASA astronaut Nick Hague and Roscosmos cosmonaut Aleksandr Gorbunov are seen inside the SpaceX Dragon capsule as NASA’s SpaceX Crew-9 crew members return to Earth on March 18, 2025. Dragon is scheduled to splashdown in the Gulf of America, off the coast of Tallahassee, Florida, at 5:57 p.m. EDT.

SpaceX’s Dragon spacecraft completed its deorbit burn at 5:18 p.m. EDT.  

NASA astronauts Nick Hague, Suni Williams, and Butch Wilmore, and Roscosmos cosmonaut Aleksandr Gorbunov are less than an hour away from a splashdown off the coast of Florida. 

Four minutes before splashdown, the drogue parachutes will deploy at about 18,000 feet in altitude while Dragon is moving approximately 350 miles per hour. Less than a minute later, the main parachutes will deploy at about 6,000 feet in altitude while the spacecraft is moving approximately 119 miles per hour. 

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Elyna Niles-Carnes

NASA’s SpaceX Crew-9 Prepares for Deorbit Burn

NASA’s SpaceX Crew-9 Prepares for Deorbit Burn

Image shows astronaut in their suits inside the International Space Station
NASA’s SpaceX Crew-9 prepares for departure from the International Space Station on Monday, March 17, 2025. Top left, NASA astronauts Suni Williams and Butch Wilmore, followed by bottom left, Roscosmos cosmonaut Aleksandr Gorbunov and NASA astronaut Nick Hague.
NASA

NASA’s SpaceX Crew-9 crew members are moments away from a deorbit burn on their journey from the International Space Station to Earth. 

The SpaceX Dragon spacecraft, carrying NASA astronauts Nick Hague, Suni Williams, and Butch Wilmore, and Roscosmos cosmonaut Aleksandr Gorbunov, undocked from the space station at 1:05 a.m. EDT March 18. 

The deorbit burn, which is expected to last 7.5 minutes, places the Dragon spacecraft on a precise trajectory to return to the splashdown zone in the Gulf of America, off the coast of Tallahassee, Florida, at approximately 5:57 p.m. 

Live coverage of the Crew-9 broadcast undocking continues on NASA+. Learn  how to watch  NASA content through a variety of platforms, including social media. 

Also check back for updates on the mission blog, @commercial_crew on X, or commercial crew on Facebook. 

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Elyna Niles-Carnes