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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: ksc-newsroom@mail.nasa.gov.

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: ksc-newsroom@mail.nasa.gov.

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 Crew-4 mission will carry Mission Commander Kjell Lindgren, Pilot Robert Hines, and Mission Specialist Jessica Watkins, as well as ESA (European Space Agency) astronaut Samantha Cristoforetti, who will also serve as a mission specialist, to the space station for a six-month science mission.

This is the fourth crew rotation flight for the agency’s Commercial Crew Program. More details about the mission and the Commercial Crew Program can be found in the online press kit, or by following the commercial crew blog, @commercial_crew, and commercial crew on Facebook.

The astronauts flying on NASA’s SpaceX Crew-4 mission to the International Space Station are now on their way to the agency’s Kennedy Space Center in Florida to begin final preparations for launch.

NASA astronauts Kjell Lindgren, Robert Hines, and Jessica Watkins, and ESA (European Space Agency) astronaut Samantha Cristoforetti, boarded a Gulfstream jet aircraft and departed from Ellington Field near the agency’s Johnson Space Center in Houston for the flight to Florida. The crew is expected to arrive at the Launch and Landing Facility at Kennedy around 12:30 p.m. EDT.

Crew-4 astronauts will be greeted upon their arrival by Kennedy Space Center Director Janet Petro along with NASA Associate Administrator, Space Operations Kathy Lueders, and ESA Houston Office Team Leader Barbara Nucera. Coverage will begin at approximately 12:30 p.m. EDT, and will include welcome remarks, crew comments, and a brief question and answer session with attending news media. The event will be broadcast live on NASA TV and the agency’s website, weather permitting.

The Flight Readiness Review for NASA’s SpaceX Crew-4 mission to the International Space Station has concluded, and teams are proceeding toward a 5:26 a.m. EDT liftoff on Saturday, April 23, from Kennedy Space Center’s Launch Complex 39A in Florida. NASA will hold a media conference at approximately 4:30 p.m. EDT to discuss the outcome of the review. Listen live on the agency’s website.

Participants in the teleconference are:

• Kathy Lueders, associate administrator, Space Operations Mission Directorate, NASA Headquarters
• Steve Stich, manager, Commercial Crew Program, Kennedy
• Joel Montalbano, manager, International Space Station, NASA’s Johnson Space Center
• Zeb Scoville, chief flight director, Flight Operations Directorate, Johnson
• Jared Metter, director, Flight Reliability, SpaceX
• Frank De Winne, program manager, International Space Station, ESA

NASA astronauts Kjell Lindgren, Robert Hines, and Jessica Watkins, and ESA (European Space Agency) astronaut Samantha Cristoforetti, will launch on SpaceX’s Falcon 9 rocket and Crew Dragon spacecraft, named Freedom, for the fourth crew rotation flight under the agency’s Commercial Crew Program.

More details about the mission and the Commercial Crew Program can be found in the online press kit, or by following the commercial crew blog, @commercial_crew, and commercial crew on Facebook.

NASA and SpaceX are targeting 1:29 p.m. EDT on Thursday, June 3, for the company’s 22nd commercial resupply services mission to the International Space Station. The SpaceX Falcon 9 rocket, topped by the uncrewed Cargo Dragon spacecraft, is scheduled to lift off from Launch Complex 39A at NASA’s Kennedy Space Center in Florida.

This will be the second SpaceX mission to deliver science investigations, supplies, and equipment for NASA under the agency’s second Commercial Resupply Services contract. To date, SpaceX has completed 21 cargo resupply missions to and from the space station, providing more than 100,000 pounds of supplies and approximately 80,000 pounds of return mass.

Tune in to NASA TV and the agency’s website for live coverage, beginning Wednesday, June 2, with prelaunch activities.

To learn more about the mission, visit https://www.nasa.gov/spacex.

Dragon’s solar arrays are unfurled and the spacecraft will begin a carefully choreographed series of thruster firings to reach the orbiting laboratory three days later, on Monday, March 9. Dragon will deliver about 4,500 pounds of cargo to the International Space Station.

When it arrives March 9, Expedition 62 Flight Engineer Jessica Meir of NASA will grapple Dragon, with Andrew Morgan of NASA acting as a backup. The station crew will monitor Dragon functions during rendezvous. After Dragon’s capture, mission control at NASA’s Johnson Space Center in Houston will send ground commands for the station’s arm to rotate and install it on the bottom of the station’s Harmony module.

Live coverage of the rendezvous and capture can be viewed on March 9 beginning at 5:30 a.m. EST at www.nasa.gov/live.

The Dragon spacecraft has separated from the second stage of the SpaceX Falcon 9 rocket.

T-0, ignition and liftoff of the SpaceX Falcon 9 rocket and Dragon spacecraft at 11:50 p.m. EST, setting off on the company’s 20th mission to deliver supplies, equipment and science experiments to the International Space Station. The vehicle is quickly climbing away from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida.

Dragon’s solar arrays are unfurled and the spacecraft will begin a carefully choreographed series of thruster firings to reach the orbiting laboratory three days later, Saturday, Dec. 8. Dragon will deliver about 5,600 pounds of cargo to the International Space Station.

The Dragon spacecraft has separated from the second stage of the SpaceX Falcon 9 rocket.