NASA, Boeing Progress on Testing Starliner with Crew at Space Station

The Starliner spacecraft on NASA's Boeing Crew Flight Test approaches the International Space Station.
The Starliner spacecraft on NASA’s Boeing Crew Flight Test approaches the International Space Station while orbiting 263 miles above Quebec, Canada. NASA astronauts Butch Wilmore and Suni Williams aboard Starliner docked to the orbital outpost’s forward port on the Harmony module at 1:34 p.m. EDT on Thursday, June 6. Photo credit: NASA

Orbiting Earth as part of the nine-person crew of the International Space Station, NASA astronauts Butch Wilmore and Suni Williams continue testing Boeing’s Starliner spacecraft as part of its first flight with astronauts. The testing is part of the data collection on the Starliner system for certification by NASA for regular crewed mission to the orbital complex.

As part of NASA’s Boeing Crew Flight Test, Wilmore and Williams, along with teams on the ground, are stepping through numerous flight objectives following arrival of Starliner to the space station on June 6, including:

  • Powering the spacecraft down into a minimal power mode, which it will enter during operational missions while the crew works aboard station, and then powering it up again;
  • Conducting “safe haven” checks to show the spacecraft can support a crew with its own air and consumables during in an emergency on the station;
  • Performing a habitability study, along with astronauts Tracy Dyson and Matthew Dominick,to evaluate seating positions and other factors, such as air circulation for a four-person crew;
  • Evaluating spacesuit and seat-fits, as well as checkouts of the service module’s batteries.

Meanwhile, ground teams continue to assess and monitor Starliner’s performance and planning for return of the mission no earlier than Tuesday, June 18, pending weather and spacecraft readiness. Starliner is cleared for crew emergency return scenarios from space station, if needed, in accordance with the flight rules.

While Starliner remains docked to station, ground teams are continuing to evaluate propulsion system in-flight observations.

“Butch and Suni are doing great aboard station as ground teams continue digging into the details of Starliner’s on-orbit, rendezvous, and docked performance,” said Steve Stich, manager, NASA’s Commercial Crew Program. “We expected to do a lot of valuable learning on this test flight, and I am extremely proud of how the NASA and Boeing teams are working together to ensure we can safely execute the return portion of the mission.”

One of Starliner’s aft-facing reaction control system (RCS) thrusters, capable of about 85 pounds of thrust, remains de-selected as teams continue to evaluate its performance. Ground teams plan to fire all 28 RCS thrusters after undocking to collect additional data signatures on the service module thrusters before the hardware is expended. As part of normal operations, the service module separates from crew module on return, so NASA and Boeing will gather as much data as possible to aid in system assessments.

Teams currently are assessing what impacts, if any, five small leaks in the service module helium manifolds would have on the remainder of the mission. Engineers evaluated the helium supply based on current leak rates and determined that Starliner has plenty of margin to support the return trip from station. Only seven hours of free-flight time is needed to perform a normal end of mission, and Starliner currently has enough helium left in its tanks to support 70 hours of free flight activity following undocking. While Starliner is docked, all the manifolds are closed per normal mission operations preventing helium loss from the tanks.

Engineers also are evaluating an RCS oxidizer isolation valve in the service module that is not properly closed. Ground teams performed a successful propulsion system valve checkout on Sunday. All other oxidizer and fuel valves within the service module were cycled normally. The suspect oxidizer isolation valve was not cycled in the recent checkout. It will remain commanded closed for the remainder of the mission while ground teams continue to evaluate its data signatures. The crew module propulsion valves, which are part of an independent system that steers the capsule in the last phase of flight before landing, also were successfully cycled, and all those valves are performing as designed.

Mission managers are continuing to work through the return plan, which includes assessments of flight rationale, fault tolerance, and potential operational mitigations for the remainder of the flight. NASA and Boeing will hold a pre-departure media teleconference to provide additional updates before Starliner undocks from station.

With launch and docking already completed, the last remaining dynamic phase of the mission will come at the end of the flight test when Starliner will undock from the orbiting laboratory and then adjust its orbit to move away from the space station. The spacecraft, with Wilmore and Williams aboard, will perform a deorbit burn before entering the atmosphere and landing in the southwestern United States under parachutes and landing airbags to complete the flight.

As part of the agency’s Commercial Crew Program, the mission is the first crewed flight for the Starliner spacecraft. Learn more about the mission by following the commercial crew blog,@commercial_crew on X, and commercial crew on Facebook.

Starliner Crew Adjusts to Station Life During Spacewalk Preps

Boeing's Starliner spacecraft on NASA's Crew Flight Test approaches the International Space Station while orbiting 263 miles above Quebec, Canada, on June 6.
Boeing’s Starliner spacecraft on NASA’s Crew Flight Test approaches the International Space Station while orbiting 263 miles above Quebec, Canada, on June 6.

Nine astronauts and cosmonauts are living aboard the International Space Station following the arrival of two crewmates aboard Boeing’s Starliner spacecraft for the first time on Thursday. The Expedition 71 crewmates slept in on Friday then split up their day on spacewalk preparations, human research, and Starliner configurations.

Starliner crew members Butch Wilmore and Suni Williams, both veteran NASA astronauts, boarded the orbital outpost after docking the spacecraft to the Harmony module’s forward port at 1:34 p.m. EDT on Thursday. The duo will spend a weeklong mission on the outpost checking out the new spacecraft’s systems and conducting microgravity research.

Wilmore and Williams slept in on Friday before beginning their first full day on the station transferring cargo and emergency gear in and out of Starliner. The Starliner crew will go into the weekend checking out the new vehicle’s docked capabilities and systems.

Meanwhile, a trio of spacewalks are planned this month for science and maintenance on the orbital lab. NASA Flight Engineer Tracy C. Dyson worked throughout Friday reviewing spacewalk procedures and configuring spacewalk tools inside the Quest airlock with assistance from fellow flight engineers Mike Barratt and Jeanette Epps.

Mission managers will discuss the upcoming spacewalks on NASA TV at 4 p.m. EDT on Tuesday, June 11. Watch live on the NASA+ streaming service via the web or the NASA app. Mission coverage also will air live on NASA Television,  YouTube, and on the agency’s website. Learn how to stream NASA TV through a variety of platforms including social media.

Barratt also helped the Starliner astronauts unpack new station cargo before servicing life support equipment in the Destiny, Tranquility, and Harmony modules. Epps spent the rest of her day processing blood and saliva samples for the Immunity Assay investigation that is exploring how microgravity affects cellular immunity. NASA Flight Engineer Matthew Dominick assisted the Starliner crew with emergency hardware then wrapped up his day in Tranquility replacing orbital plumbing components.

Roscosmos station Commander Oleg Kononenko started his day getting familiar with the Plasma Crystal-4 space physics experiment that explores low-temperature gas mixtures. Next, he tested a 3D printer’s ability to manufacture hardware in space. Flight Engineers Nikolai Chub and Alexander Grebenkin took turns scanning each other’s stomachs after breakfast to observe how the digestion system adapts to long-term weightlessness. The duo split up afterward and worked the rest of Friday on a variety of life support maintenance throughout the space station’s Roscosmos segment.


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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Boeing’s Crew Flight Test on Starliner Docks to Station

Boeing's Starliner spacecraft with two NASA astronauts aboard approaches the space station for an autonomous docking as it orbited 257 miles above the South Pacific Ocean.
Boeing’s Starliner spacecraft with two NASA astronauts aboard approaches the space station for an autonomous docking as it orbited 257 miles above the South Pacific Ocean.

NASA astronauts Butch Wilmore and Suni Williams, aboard Boeing’s Starliner spacecraft, successfully docked to the International Space Station at 1:34 p.m. EDT. Starliner launched on a United Launch Alliance Atlas V rocket at 10:52 a.m., June 5 from Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida.

During flight, Wilmore and Williams successfully performed manual piloting demonstrations of Starliner and completed a sleep period. Prior to crew sleep, mission teams identified three helium leaks in the spacecraft. One of these was previously discussed before flight along with a management plan, and the other two occured when the spacecraft arrived in orbit. To monitor and manage these leaks, the three helium manifolds were closed in flight during the crew’s sleep period and were all reopened ahead of rendezvous and docking operations. After docking, all Starliner manifolds are closed per normal plans.

As Starliner began its approach to the space station, five reaction control system thrusters failed off during flight. Mission teams performed a series of hot-fire tests which re-enabled four of the thrusters while the crew manually piloted the spacecraft at the station’s 200-meter hold point. After re-selecting four of the thrusters, Starliner had the fault tolerance required to approach the space station for docking. At the 10-meter hold point, the mission team completed system readiness evaluations and proceeded with docking.

Starliner’s hatch opening will begin about 3:20 p.m., with welcome remarks to follow.

NASA will continue coverage on NASA+, NASA Television, the NASA app, YouTube, and the agency’s website. Learn how to stream NASA TV through a variety of platforms including social media.

NASA will host a post-docking media conference at approximately 5 p.m. with the following participants:

  • NASA Associate Administrator Jim Free
  • Steve Stich, manager, NASA’s Commercial Crew Program
  • Jeff Arend, manager for systems engineering and integration, NASA’s International Space Station Office
  • Mark Nappi, vice president and program manager, Commercial Crew Program, Boeing

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.

Get weekly updates from NASA Johnson Space Center at: https://roundupreads.jsc.nasa.gov/

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Starliner Approaches Station as Live Coverage Continues

Boeing's Starliner spacecraft approaches the International Space Station for docking on June 6, 2024. Credit: NASA TV
Boeing’s Starliner spacecraft approaches the International Space Station for docking on June 6, 2024. Credit: NASA TV

NASA’s coverage of the Boeing Starliner spacecraft flight to the International Space Station continues on NASA+, NASA Television, the NASA app, YouTube, and the agency’s website. The Starliner spacecraft is performing its careful approach to the space station with NASA astronauts Butch Wilmore and Suni Williams. After conducting a series of reaction control system thruster tests, four thrusters were recovered from five that had gone out. The spacecraft will conduct a planned hold at 10 meters from its station docking port to assess readiness. The second docking window opens at 1:33 p.m. ET.


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.

Get weekly updates from NASA Johnson Space Center at: https://roundupreads.jsc.nasa.gov/

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Boeing’s Starliner Approaching Station Live on NASA TV

Boeing's Starliner crew ship approaches the space station during the company's uncrewed Orbital Flight Test-2 mission on May 20, 2022.
Boeing’s Starliner crew ship approaches the space station during the company’s uncrewed Orbital Flight Test-2 mission on May 20, 2022.

NASA’s arrival coverage of Boeing’s Starliner spacecraft to the International Space Station is now underway on NASA+, NASA Television, the NASA app, YouTube, and the agency’s website. Docking is scheduled at approximately 12:15 p.m. EDT Thursday, June 6.

NASA astronauts Butch Wilmore and Suni Williams launched safely on the Starliner spacecraft on a United Launch Alliance Atlas V rocket at 10:52 a.m. June 5 from Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida.

The Starliner crew continues to make their way to the space station. During flight, Wilmore and Williams successfully performed manual piloting demonstrations of Starliner and completed a sleep period. Prior to crew sleep, mission teams identified three helium leaks in the spacecraft. One of these was previously discussed before flight along with a management plan, and the other two are new since the spacecraft arrived in orbit. To monitor and manage these leaks, the three helium manifolds were isolated. Those manifolds have all been reopened prior to a Starliner height adjust burn, called NHPC. All affected manifolds will remain open for rendezvous and docking operations.

Following in-flight reviews of the mission and helium leaks, the Starliner and International Space Station mission management teams are “go” to proceed with space station arrival. The flight control team will continue to monitor the leak rates in Starliner’s propulsion system. After docking, all of Starliner manifolds will be closed per normal plans. All other Starliner systems are functioning normally.

NASA’s arrival and in-flight event coverage is as follows (all times Eastern and subject to change based on real-time operations):

12:15 p.m. – Targeted docking

2 p.m. – Hatch opening

2:20 p.m. – Welcome remarks

3:30 p.m. – Post-docking news conference at NASA Johnson with the following participants:

  • NASA Associate Administrator Jim Free
  • Steve Stich, manager, NASA’s Commercial Crew Program
  • Jeff Arend, manager for systems engineering and integration, NASA’s International Space Station Office
  • Mark Nappi, vice president and program manager, Commercial Crew Program, Boeing

Coverage of the post-docking news conference will air live on NASA+, NASA Television, the NASA app, YouTube, and the agency’s website.

To attend the post-docking briefing, U.S. media must contact the NASA Johnson newsroom at: [email protected] or 281-483-5111 by 1 p.m. June 6. To join by phone, media must contact the NASA Johnson newsroom by 3 p.m. June 6.

5:50 p.m. – NASA Administrator Bill Nelson, Deputy Administrator Pam Melroy, Associate Administrator Jim Free, Associate Administrator for Space Operations Ken Bowersox, and Johnson Space Center Director Vanessa Wyche will speak with Wilmore and Williams about their launch aboard the Starliner spacecraft.

Coverage of the Earth to space call will air live on NASA+, NASA Television, the NASA app, YouTube, and the agency’s website.


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.

Get weekly updates from NASA Johnson Space Center at: https://roundupreads.jsc.nasa.gov/

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NASA to Host Postlaunch News Conference at 12:30 p.m. EDT, Starliner Headed to Station

A United Launch Alliance Atlas V rocket carrying a Boeing Starliner spacecraft launches NASA astronauts Butch Wilmore and Suni Williams from Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Wednesday, June 5, 2024. Photo credit: NASA Television

NASA’s Boeing Crew Flight Test astronauts are on their way to the International Space Station!

The capsule, carrying NASA astronauts Butch Wilmore, commander, and Suni Williams, pilot, is expected to reach the orbiting laboratory at 12:15 p.m. EDT, Thursday, June 6. 

A postlaunch news conference will be held at the agency’s Kennedy Space Center in Florida and is scheduled to begin at 12:30 p.m. with the following participants:  

  • NASA Administrator Bill Nelson 
  • Ken Bowersox, associate administrator, NASA’s Space Operations Mission Directorate 
  • Joel Montalbano, deputy associate administrator, NASA’s Space Operations Mission Directorate 
  • Steve Stich, manager, NASA’s Commercial Crew Program 
  • Mark Nappi, vice president and program manager, Commercial Crew Program, Boeing
  • Tory Bruno, president and CEO, ULA

Coverage of the postlaunch news conference will air live on NASA+, the NASA app, YouTube, and the agency’s website. 

Once the postlaunch news conference is complete, NASA+ coverage will end, and mission coverage will continue on both NASA channels. NASA+ coverage will resume at 9:30 a.m. Thursday, June 6, as Starliner approaches the space station for a docking to the forward-facing port of the Harmony module.

NASA Astronauts, Starliner Inch Closer to Space Station

The United Launch Alliance Atlas V rocket booster separates from the Centaur upper stage carrying Boeing’s Starliner spacecraft and NASA astronauts Butch Wilmore and Suni Williams. Photo credit: NASA Television

The United Launch Alliance Atlas V rocket booster has separated from the Centaur upper stage carrying Boeing’s Starliner spacecraft. The Centaur will continue to help propel Boeing’s Starliner to a suborbit before the spacecraft boosts itself to orbit, bringing it closer to the International Space Station. 

Measuring 10 feet in diameter and 41.5 feet in length, the Centaur upper stage uses liquid hydrogen and liquid oxygen to power its twin Aerojet Rocketdyne RL10A-4-2 engines. The burn of the Centaur’s dual engines is expected to last a little more than seven minutes before engine cutoff and separation from Starliner. Following separation, the crew capsule carrying NASA astronauts Butch Wilmore and Suni Williams will be on its own for the remainder of the journey to the space station. 

Following its separation, the Atlas Centaur will land in the ocean near Australia. 

NASA Television will provide continuous coverage leading up to docking at the space station and through hatch opening and welcome remarks.

NASA’s Boeing Crew Flight Test ULA Rocket Reaches Max Q

A United Launch Alliance Atlas V rocket carrying Boeing’s Starliner capsule with NASA astronauts Butch Wilmore and Suni Williams has reached Max Q. The milestone is the moment of peak aerodynamic pressure on the rocket.

Following Max Q will be Atlas V booster engine cutoff and separation. 

NASA’s Boeing Crew Flight Test Access Arm Retracts

The crew access arm retracts from Boeing’s Starliner spacecraft at Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida ahead of NASA’s Boeing Crew Flight Test on Wednesday, June 5, 2024. Photo credit: NASA Television

We’re just minutes away from liftoff of NASA’s Boeing Crew Flight Test that will send NASA astronauts Butch Wilmore and Suni Williams to the International Space Station as part of the agency’s Commercial Crew Program. 

At Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida, the crew access arm has retracted on the crew access tower. 

The crew access arm lines up with the hatch of Boeing’s Starliner capsule, and it’s designed to rotate and retract at various speeds. The arm provides entry and emergency egress for astronauts and technicians into and out of the spacecraft. 

Liftoff of Boeing’s Starliner on a United Launch Alliance Atlas V rocket remains on schedule for 10:52 a.m. EDT.

NASA’s Boeing Crew Flight Test Hatch Closed

Image of Boeing crews close the hatch to the Starliner capsule carrying NASA astronauts Butch Wilmore and Suni Williams.
Boeing crews close the hatch to the Starliner capsule carrying NASA astronauts Butch Wilmore and Suni Williams. Photo credit: NASA Television

Just about one hour remains ahead of liftoff of NASA’s Boeing Crew Flight Test to the International Space Station. 

Communication checks with NASA astronauts Butch Wilmore and Suni Williams are complete. The hatch is now closed on the Boeing Starliner spacecraft, named Calypso. Next up, a series of cabin leak checks and a cabin pressurization check will be completed. 

For NASA missions to low Earth orbit, the Starliner capsule, with a diameter of 15 feet (4.56m), will hold four astronauts or a mix of crew and cargo. 

NASA astronauts Suni Williams and Butch Wilmore inside Boeing’s Starliner spacecraft ahead of launch on Wednesday, June 5, 2024. Photo credit: NASA Television
NASA astronauts Suni Williams and Butch Wilmore inside Boeing’s Starliner spacecraft ahead of launch on Wednesday, June 5, 2024. Photo credit: NASA Television

Inside Starliner for this mission is about 759 pounds of cargo, which includes food, clothing, exercise gear, medical supplies, photo and media equipment, vehicle supplies and tools, and other items. A thumb drive containing about 3,500 images of artwork from children in 35 states and 66 different countries is also set to launch aboard Starliner tonight. 

Wilmore is flying with two gold rings he had made for his father and brother that resemble the U.S. Navy astronaut pilot wing pin. He also brought shirts from his alma maters, Tennessee Technological University and the University of Tennessee. Williams brought shirts from the U.S. Naval Academy and the Sunita L. Williams Elementary School in Needham, Massachusetts. She also has a diver pin and two dog tags from her Labrador retrievers. 

At 10:52 a.m. EDT, a United Launch Alliance Atlas V rocket will launch the Starliner crew capsule from Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida. Following a roughly 25-hour journey, Starliner will rendezvous and dock with the space station at 12:15 p.m. Thursday, June 6. 

Watch live coverage of today’s mission on NASA+, NASA Television, the NASA app, YouTube, and the agency’s website. Learn how to stream NASA TV through a variety of platforms including social media.