Meteorologists with the U.S. Space Force 45th Weather Squadron now predict an 80% chance of favorable weather for today’s uncrewed launch of NASA’s Boeing Orbital Flight Test-2 (OFT-2) to the International Space Station. Liftoff is scheduled for 6:54 p.m. EDT from Cape Canaveral Space Force Station in Florida.
The primary weather concerns for launch day are the cumulus and anvil cloud rules violations during the instantaneous launch window.
Boeing’s CST-100 Starliner spacecraft, atop a United Launch Alliance Atlas V rocket, will lift off from Space Launch Complex-41. Live launch coverage begins at 6 p.m. EDT on NASA TV, the NASA app, and the agency’s website.
On Wednesday, May 4, Boeing’s CST-100 Starliner was joined with the rocket that will launch the spacecraft on its way to the International Space Station on an uncrewed flight test for NASA’s Commercial Crew Program.
During the operation, Starliner rolled out of the Commercial Crew and Cargo Processing Facility (C3PF) at NASA’s Kennedy Space Center in Florida and made its way to Space Launch Complex-41 (SLC-41) at Cape Canaveral Space Force Station in preparation for the company’s second uncrewed Orbital Flight Test (OFT-2)
Starliner was raised and carefully placed onto the rocket and now is fully assembled and ready for an integrated systems test, a tip-to-tail electrical check of the 172-foot-tall Atlas V and Starliner stack.
OFT-2 is scheduled to launch Thursday, May 19, to demonstrate the system’s human transportation capabilities.
About 24 hours after launch, Starliner will rendezvous and dock to the space station and then return to Earth five to 10 days later. The test is the last flight before the Starliner system launches American astronauts on the Crew Flight Test (CFT) to the microgravity laboratory – the spacecraft’s first flight test with crew on board. Potential launch windows for CFT are under review and will be determined after a safe and successful OFT-2.
NASA and Boeing will hold a joint media teleconference at noon EDT on Tuesday, May 3, to discuss the agency’s Boeing Orbital Flight Test (OFT-2) mission and provide an update on spacecraft readiness.
The teleconference includes the following participants:
Kathryn Lueders, associate administrator, Space Operations Mission Directorate, NASA Headquarters
Steve Stich, manager, Commercial Crew Program, NASA’s Kennedy Space Center in Florida
Joel Montalbano, manager, International Space Station Program, NASA’s Johnson Space Center in Houston
Michelle Parker, vice president and deputy general manager, Space and Launch, Boeing
Mark Nappi, vice president and program manager, CST-100 Starliner, Boeing
OFT-2 is scheduled to launch on Thursday, May 19, from Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida. Boeing’s uncrewed CST-100 Starliner will launch atop a United Launch Alliance Atlas V rocket for its flight test to the International Space Station as part of NASA’s Commercial Crew Program.
Starliner is expected to arrive at the space station for docking about 24 hours later with more than 500 pounds of NASA cargo and crew supplies. After a successful docking, Starliner will spend five to 10 days aboard the orbiting laboratory before returning to Earth in the western United States. The spacecraft will return with nearly 600 pounds of cargo, including reusable Nitrogen Oxygen Recharge System (NORS) tanks that provide breathable air to station crew members.
Media wishing to participate in the OFT-2 mission overview news teleconference must RSVP by 11 a.m., Tuesday, May 3, by emailing the Kennedy newsroom at firstname.lastname@example.org.
The Psyche spacecraft completed its journey from NASA’s Jet Propulsion Laboratory (JPL) in Southern California to NASA’s Kennedy Space Center in Florida. First, it traveled to March Air Reserve Base, about 55 miles southeast of JPL, before flying cross-country aboard a C-17 aircraft to the Launch and Landing Facility (formerly the Shuttle Landing Facility) where crews offloaded the spacecraft. Over the next three months, the spacecraft will undergo additional preparations before launching aboard a SpaceX Falcon Heavy rocket on Aug. 1.
The Psyche spacecraft will use solar-electric propulsion to travel approximately 1.5 billion miles (2.4 billion kilometers) to rendezvous with its namesake asteroid in 2026. This will make it the first spacecraft to use Hall-effect thrusters beyond the orbit of the Moon. This thruster technology traps electrons in a magnetic field and uses them to ionize onboard propellant, expending much less propellant than equivalent chemical rockets. Psyche also carries three scientific instruments: an imager, magnetometer, and a gamma ray and neutron spectrometer.
The unique, metal-rich Psyche asteroid may be part of the core of a planetesimal, a building block of rocky planets in our solar system. Learning more about the asteroid could tell us more about how our own planet formed and help answer fundamental questions about Earth’s own metal core and the formation of our solar system.
The launch of Psyche will include two secondary payloads, NASA’s Deep Space Optical Communications (DSOC) technical demonstration, which is attached to the spacecraft as a separate experiment and the Janus spacecraft. DSOC will perform the agency’s first demonstration of optical communications beyond the Earth-Moon system, and will use lasers to send data at a higher rate than typical spacecraft radio communications. Janus is two small spacecraft that will study two different binary asteroids (two asteroids that orbit each other) to understand the formation and evolution of these objects.
The Psyche mission is led by Arizona State University. JPL, which is managed for NASA by Caltech in Pasadena, California, is responsible for mission’s overall management, system engineering, integration and testing, and mission operations. Maxar Technologies in Palo Alto, California, provided the high-power solar electric propulsion spacecraft chassis. NASA’s Launch Services Program (LSP), based at Kennedy, is managing the launch. Psyche will be the 14th mission in the agency’s Discovery program and LSP’s 100th primary mission. Numerous international, university, and commercial partners are part of the Psyche team.
“This is our fourth crew rotation flight – it’s kind of hard to believe,” said Steve Stich, manager, Commercial Crew Program, NASA’s Johnson Space Center in Houston. “It seems like Demo-2 was just yesterday, and it’s exciting to be here. We had a really clean countdown today – the Falcon 9 rocket did great; the Dragon vehicle did great. It was great to see the crew get in. You could tell they were excited to start their flight off.”
Upon their arrival at the space station, the Crew-4 astronauts will be greeted by NASA astronauts of the Expedition 67 crew already on board. During their six-month stay aboard the microgravity laboratory, Lindgren, Hines, Watkins, and Cristoforetti will join the Expedition 67 crew in conducting a number of science and research investigations.
The Crew-4 astronauts will conduct new and exciting scientific research in areas such as materials science, health technologies, and plant science to prepare for human exploration beyond low-Earth orbit and benefit life on Earth. Experiments will include studies on the aging of immune systems, organic material concrete alternatives, and cardiorespiratory effects during and after long-duration exposure to microgravity. These are just some of the more than 200 science experiments and technology demonstrations that will take place during their mission.
Launching alongside the crew in the Dragon capsule is an investigation that seeks to restore meaningful vision to people suffering from retinal degenerative diseases like retinitis pigmentosa and macular degeneration. The Protein-Based Artificial Retina Manufacturing experiment tests the manufacturing of artificial retinas or retinal implants in microgravity, where it is expected their production could be optimized.
Also traveling to space aboard the Crew Dragon are Smart-Tex shirts as part of the German Space Agency (DLR) investigation called Wireless Compose-2. The shirts are fitted with sensors, wiring, and a communications module to wirelessly transmit data to a base station. The shirt is designed to monitor cardiovascular activity like relative blood pressure and can provide details about heart contraction rate and valve opening and closing times – something normally accessible only through sonography or CT scans. These kinds of wearable technologies could be used to monitor health throughout a long-duration space exploration mission and could lead to a more flexible implementation of this technology in health monitoring equipment on Earth.
Crew-4 is NASA’s fourth crew rotation mission with SpaceX for the agency’s Commercial Crew Program. Lindgren and Cristoforetti have previously traveled to the International Space Station, while it will be the first trip for Hines and Watkins. Crew-4 astronauts are slated to arrive at the space station today, April 27, with docking targeted for 8:15 p.m. EDT. Following docking and hatch opening, a welcoming ceremony is planned for 2:40 a.m. EDT.
Coverage of Crew-4’s arrival to the station will air live on NASA Television and the agency’s website, beginning with docking at 8:15 p.m. EDT.
Earlier on Tuesday, April 26, NASA Administrator Bill Nelson and senior NASA leadership addressed members of the media during a briefing held at the agency’s Kennedy Space Center in Florida for NASA’s SpaceX Crew-4 mission, now less than a day away.
“Flying safely with crew means that you’ve got to do it one step at a time,” said Kathryn Lueders, associate administrator, Space Operations Mission Directorate, NASA Headquarters. “So, tomorrow morning, we’re hoping that you’ll get to see a really, really beautiful step, and we’ll get our crew safely to orbit.”
Lindgren and Hines were assigned to the Crew-4 mission in February 2021 and began working and training on SpaceX’s next-generation human spacecraft and for their stay aboard the space station. Cristoforetti was assigned to the mission in March 2021 and Watkins was added as the fourth crew member in November 2021.
The Crew-4 mission continues NASA’s efforts to restore and maintain American leadership in human spaceflight. Regular commercial crew rotation missions enable NASA to continue the important research and technology investigations taking place aboard the station. Such research benefits people on Earth and lays the groundwork for future exploration beyond low-Earth orbit, starting with the agency’s Artemis missions, which includes landing the first woman and person of color on the lunar surface.
The SpaceX Falcon 9 rocket and Crew Dragon spacecraft, which the crew has named Freedom, are scheduled to lift off at 3:52 a.m. EDT on Wednesday, April 27. Just over 17 hours after launch, the crew is expected to arrive at the orbiting laboratory. Docking is planned for approximately 8:15 p.m. EDT on Wednesday, April 27.
Weather officials with the U.S. Space Force’s 45th Weather Squadron are predicting an 90% chance of favorable weather conditions for launch – this is derived from Falcon 9 Crew Dragon launch weather criteria. The primary weather concerns are cumulus cloud and flight through precipitation rules.
For more than 21 years, humans have continuously lived and worked aboard the International Space Station, advancing scientific knowledge and demonstrating new technologies that enable us to prepare for human exploration to the Moon and Mars. The station’s design requires humans living aboard to maintain it, operate it, and upgrade it; thus, International Space Station operations, including commercial resupply and commercial crew, are essential to the mission.
Live coverage of launch preparations and liftoff will begin at 12 a.m. EDT on Wednesday, April 27, on NASA Television, the NASA app, and the agency’s website.
Axiom Space astronauts Michael López-Alegría, Larry Connor, Eytan Stibbe, and Mark Pathy have safely returned to Earth, marking the end of the Axiom Mission 1 (Ax-1) – the first private astronaut mission to the International Space Station. SpaceX’s Dragon spacecraft, carrying the crew of four and more than 200 pounds of science and supplies, including NASA experiments and hardware, undocked from the space station at 9:10 p.m. EDT on Sunday, April 24. About 16 hours later, the vehicle splashed down in the Atlantic Ocean off the coast of Florida.
“The success of this first private astronaut mission to the International Space Station is an important step in opening opportunities for space travelers and achieving NASA’s goal of enabling commercial business off the planet in low-Earth orbit,” said NASA Administrator Bill Nelson. “This progress has been made possible by NASA’s work with private industry – especially the Commercial Crew Program. I’m incredibly proud of the NASA, SpaceX, and Axiom teams for safely completing this landmark mission. Welcome home, Ax-1!”
The crew spent 15 days in orbit, conducting a variety of science experiments and technology demonstrations. A few highlights include research on cancer cell growth, a demonstration testing a new air purifier for station use, and a study utilizing swarms of autonomous tiles for future applications of in-space construction.
Following splashdown, teams will retrieve science aboard the Dragon spacecraft and transport it to nearby Kennedy Space Center for further investigation. Kennedy’s proximity to the coast allows researchers to study their experiments mere hours after their return to Earth, while the effects of microgravity are still largely intact.
NASA is partnering with commercial companies to establish a robust low-Earth orbit economy – one where government and private astronauts live and work aboard the space station and future commercial habitats. The agency recently selected Axiom Space to negotiate for a second private astronaut mission to the orbiting laboratory and plans to announce a third flight opportunity later this year.
Learn more information about NASA’s low-Earth orbit economy efforts at:
NASA’s SpaceX Crew-4 launch is targeted at 3:52 a.m. EDT Wednesday, April 27, to the International Space Station from Launch Complex 39A at NASA’s Kennedy Space Center in Florida.
The U.S. Space Force 45th Weather Squadron predicts a 90% chance of favorable weather conditions at the launch pad for liftoff of the Crew-4 mission based on Falcon 9 Crew Dragon launch weather criteria. The primary weather concerns for the launch area are the cumulus cloud and flight through precipitation rules. Teams also will monitor weather conditions both for the launch area and downrange for the flight of Crew Dragon.
NASA will provide coverage of the upcoming prelaunch activities for the mission sending astronauts to the microgravity laboratory. Prelaunch activities will air live on NASA Television, the NASA app, and the agency’s website. NASA’s SpaceX Crew-4 prelaunch coverage is as follows (all times Eastern):
Tuesday, April 26
7 a.m. (approximately) – Prelaunch news teleconference at Kennedy (no earlier than one hour after completion of the launch readiness review) with the following participants:
Steve Stich, manager, Commercial Crew Program, NASA Kennedy
Joel Montalbano, manager, International Space Station Program, NASA Johnson
Zeb Scoville, chief flight director, Flight Operations Directorate, NASA Johnson
Jessica Jensen, vice president, customer operations and integration, SpaceX
Josef Aschbacher, director general, ESA
Arlena Moses, launch weather officer, U.S. Space Force 45th Weather Squadron
Media may ask questions via phone only. For the dial-in number and passcode, please contact the Kennedy newsroom no later than 6 a.m. on Tuesday, April 26, at: email@example.com.
9 a.m. – NASA Administrator Media Briefing on NASA TV with the following participants:
NASA Administrator Bill Nelson
NASA Associate Administrator Bob Cabana
Kathryn Lueders, associate administrator, Space Operations Mission Directorate, NASA Headquarters
Heidi Parris, associate program scientist for the International Space Station Program
Josef Aschbacher, director general, ESA
Media may ask questions in-person and via phone. Limited auditorium space will be available for in-person participation. For the dial-in number and passcode, please contact the Kennedy newsroom no later than 8 a.m. on Tuesday, April 26, at: firstname.lastname@example.org.
NASA will provide a live video feed of Launch Complex 39A beginning Monday morning. Pending unlikely technical issues, the feed will be uninterrupted through launch: https://youtube.com/kscnewsroom.
On April 20, the SpaceX Falcon 9 rocket that will launch the Dragon Freedom capsule and Crew-4 astronauts to the International Space Station surpassed a key milestone ahead of launch. While vertical on the launch pad at Kennedy Space Center’s Launch Complex 39A in Florida, the rocket’s nine Merlin first-stage engines roared to life for seven seconds, completing the routine but critical integrated static fire test.
The SpaceX Falcon 9 rocket, with Crew Dragon atop, rolled out to the launch pad on April 19, at Kennedy Space Center in Florida in preparation for NASA’s Crew-4 launch. The rocket is now in a vertical position at Kennedy’s Launch Pad 39A and underwent a successful dry dress rehearsal in the early morning hours of April 20 with the launch team and crewmembers.
The mission will fly a new Crew Dragon, which crew members have named Freedom. Mission Commander Lindgren tweeted the significance of the name: “The name celebrates a fundamental human right, and the industry and innovation that emanate from the unencumbered human spirit.” The spacecraft’s name also recalls Freedom 7, the spacecraft that carried Alan Shepard as the first American launched into space on May 5, 1961 aboard NASA’s Mercury-Redstone 3.