NASA’s SpaceX Crew-4 Astronauts Arrive at Florida Spaceport

Crew members for NASA’s SpaceX Crew-4 mission to the International Space Station arrive at the Launch and Landing Facility at Kennedy Space Center in Florida on April 18, 2022. From left, are NASA astronauts Jessica Watkins, Kjell Lindgren and Bob Hines, and Samantha Cristoforetti, ESA (European Space Agency) astronaut. The crew will enter quarantine at the center’s astronaut crew quarters as they await launch aboard SpaceX’s Crew Dragon and Falcon 9 rocket. Launch is targeted for 5:26 a.m. EDT on April 23, 2022, from Launch Complex 39A. Crew-4 is the fourth crew rotation flight to the space station as part of NASA’s Commercial Crew Program.
Crew members for NASA’s SpaceX Crew-4 mission to the International Space Station arrive at the Launch and Landing Facility at Kennedy Space Center in Florida on April 18, 2022. From left, are NASA astronauts Jessica Watkins, Kjell Lindgren and Bob Hines, and Samantha Cristoforetti, ESA (European Space Agency) astronaut. The crew will enter quarantine at the center’s astronaut crew quarters as they await launch aboard SpaceX’s Crew Dragon and Falcon 9 rocket. Launch is targeted for 5:26 a.m. EDT on April 23, 2022, from Launch Complex 39A. Crew-4 is the fourth crew rotation flight to the space station as part of NASA’s Commercial Crew Program. Photo credit: NASA/Kim Shiflett

The astronauts who will launch this week to the International Space Station as part of NASA’s SpaceX Crew-4 mission arrived today, April 18, at the agency’s Kennedy Space Center in Florida to undergo final preparations before launch.

NASA astronauts Kjell Lindgren, Robert Hines, and Jessica Watkins, and ESA (European Space Agency) astronaut Samantha Cristoforetti, landed at the Launch and Landing Facility at Kennedy after departing earlier today from Ellington Field near the agency’s Johnson Space Center in Houston.

The crew was greeted by leaders from NASA and ESA, and a media event began shortly after their arrival. Participants included:

  • KSC Center Director Janet Petro
  • Kathy Lueders, NASA associate administrator, space operations
  • Barbara Nucera, ESA Houston team leader
  • NASA astronaut Kjell Lindgren
  • NASA astronaut Bob Hines
  • NASA astronaut Jessica Watkins
  • ESA astronaut Samantha Cristoforetti

Crew-4 astronauts are scheduled to lift off at 5:26 a.m. EDT on Saturday, April 23, aboard a SpaceX Crew Dragon spacecraft and Falcon 9 rocket from Kennedy’s Launch Complex 39A. They are slated to arrive at the space station the following day, where they will begin their science mission aboard the orbiting laboratory. Docking is targeted for around 6:00 a.m. EDT on Sunday, April 24.

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.

NASA’s SpaceX Crew-4 Astronauts En Route to Kennedy Space Center

NASA’s SpaceX Crew-4 astronauts participate in a training session at Kennedy Space Center in Florida. From left to right: NASA astronaut and SpaceX Crew-4 mission specialist Jessica Watkins; NASA astronaut and SpaceX Crew-4 pilot Robert “Bob” Hines; NASA astronaut and SpaceX Crew-4 commander Kjell Lindgren; and ESA (European Space Agency) astronaut and Crew-4 mission specialist Samantha Cristoforetti of Italy.
NASA’s SpaceX Crew-4 astronauts participate in a training session at Kennedy Space Center in Florida. From left to right: NASA astronaut and SpaceX Crew-4 mission specialist Jessica Watkins; NASA astronaut and SpaceX Crew-4 pilot Robert “Bob” Hines; NASA astronaut and SpaceX Crew-4 commander Kjell Lindgren; and ESA (European Space Agency) astronaut and Crew-4 mission specialist Samantha Cristoforetti of Italy. Photo credit: NASA

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.

Dragon Arrival at LC-39A

Crew-4 Dragon in Hangar
The SpaceX Crew-4 Dragon arrives at Launch Pad 39A hangar. Photo credit: SpaceX

SpaceX’s brand-new Dragon spacecraft – named “Freedom” by the Crew-4 astronauts – arrived at Kennedy Space Center’s Launch Complex 39A today, April 16, after making the journey from SpaceX’s processing facility at nearby Cape Canaveral Space Force Station in Florida. After Dragon is mated to the SpaceX Falcon 9 rocket, the launch vehicle will roll out to the pad and be raised to the vertical launch position.

Liftoff is scheduled for 5:26 a.m. EDT Saturday, April 23. NASA’s Crew-4 mission is the fourth crew rotation flight on a SpaceX Dragon spacecraft and Falcon 9 rocket. NASA astronauts Kjell Lindgren, and Bob Hines will serve as mission commander and pilot, respectively, and NASA astronaut Jessica Watkins and ESA (European Space Agency) astronaut Samantha Cristoforetti, will join as mission specialists.

More details about the mission and NASA’s commercial crew program can be found by following the commercial crew blog@commercial_crew on Twitter, and commercial crew on Facebook.

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

Crew-4 FRR Concludes; NASA, SpaceX ‘Go’ for April 23 Launch

Steve Stich, manager, Commercial Crew Program at Kennedy Space Center, participates in a Flight Readiness Review for the agency’s SpaceX Crew-4 mission at the Florida spaceport on April 15, 2022. International partners also participated. NASA and SpaceX mission managers held the FRR to confirm the SpaceX Falcon 9 rocket and Crew Dragon spacecraft are ready for launch. Crew-4 is scheduled to launch to the International Space Station from Kennedy’s Launch Complex 39A on April 23, 2022, as part of NASA’s Commercial Crew Program. Liftoff of the Falcon 9 rocket and Crew Dragon spacecraft is targeted for 5:26 a.m. EDT.
Steve Stich, manager, Commercial Crew Program at Kennedy Space Center, participates in a Flight Readiness Review for the agency’s SpaceX Crew-4 mission at the Florida spaceport on April 15, 2022. International partners also participated. NASA and SpaceX mission managers held the FRR to confirm the SpaceX Falcon 9 rocket and Crew Dragon spacecraft are ready for launch. Crew-4 is scheduled to launch to the International Space Station from Kennedy’s Launch Complex 39A on April 23, 2022, as part of NASA’s Commercial Crew Program. Liftoff of the Falcon 9 rocket and Crew Dragon spacecraft is targeted for 5:26 a.m. EDT. Photo credit: NASA/Kim Shiflett

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, participates in a Flight Readiness Review for the agency’s SpaceX Crew-4 mission at the agency’s Kennedy Space Center in Florida on April 15, 2022.
Kathy Lueders, associate administrator, Space Operations Mission Directorate, NASA Headquarters, participates in a Flight Readiness Review for the agency’s SpaceX Crew-4 mission at the agency’s Kennedy Space Center in Florida on April 15, 2022. Photo credit: NASA/Isaac Watson
  • 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’s SpaceX Crew-4 Flight Readiness Review Begins

NASA's SpaceX Crew-4 astronauts
NASA’s SpaceX Crew-4 astronauts participate in a training session at the agency’s Kennedy Space Center in Florida late last year. From left, ESA (European Space Agency) astronaut Samantha Cristoforetti, mission specialist; NASA astronaut Kjell Lindgren, commander; NASA astronaut Bob Hines, pilot; and NASA astronaut Jessica Watkins, mission specialist. Photo credit: SpaceX

NASA and SpaceX managers have gathered at the agency’s Kennedy Space Center in Florida to start the Crew-4 mission’s Flight Readiness Review (FRR). Over the next several hours, the FRR will focus on the preparedness of SpaceX’s crew transportation system, the International Space Station, and its international partners to support the flight, and the certification of flight readiness.

After the conclusion of the FRR, NASA will hold a media teleconference to discuss the outcome. While the teleconference will not be televised, media may call in to ask questions via phone. Contact the Kennedy newsroom no later than 4 p.m. EDT for connection details.

Participants in the teleconference include:

  • 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
  • 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 for the Crew-4 mission as part of NASA’s Commercial Crew Program. They will arrive at the International Space Station approximately 24 hours after launch. Crew-4 will arrive at station for a short overlap with NASA astronauts Raja Chari, Tom Marshburn, and Kayla Barron, and ESA astronaut Matthias Maurer, who flew to the station as part of the agency’s SpaceX Crew-3 mission in November 2021.

SpaceX Crew-2 on Track for Launch April 23, NASA Celebrates Earth Day in Space Today

A SpaceX Falcon 9 rocket with the company's Crew Dragon spacecraft onboard is in view on the launch pad at Launch Complex 39A on Tuesday, April 20, 2021, as preparations continue for the Crew-2 mission at NASA’s Kennedy Space Center in Florida.
A SpaceX Falcon 9 rocket with the company’s Crew Dragon spacecraft onboard is in view on the launch pad at Launch Complex 39A on Tuesday, April 20, 2021, as preparations continue for the Crew-2 mission at NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-2 mission is the second crew rotation mission of the SpaceX Crew Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. NASA astronauts Shane Kimbrough and Megan McArthur, ESA (European Space Agency) astronaut Thomas Pesquet, and Japan Aerospace Exploration Agency (JAXA) astronaut Akihiko Hoshide are scheduled to launch at 5:49 a.m. EDT on Friday, April 23, 2021. Photo Credit: NASA/Joel Kowsky

Launch of NASA’s SpaceX Crew-2 mission with astronauts to the International Space Station is on track for Friday, April 23, at 5:49 a.m. EDT. The SpaceX Falcon 9 rocket with Crew Dragon spacecraft will lift off from Launch Complex 39A at the agency’s Kennedy Space Center in Florida.

NASA astronauts Shane Kimbrough and Megan McArthur, along with JAXA (Japan Aerospace Exploration Agency) astronaut Akihiko Hoshide, and ESA (European Space Agency) astronaut Thomas Pesquet will fly to the International Space Station for a six-month science mission. NASA TV coverage of Crew-2 launch preparations and liftoff will begin at 1:30 a.m. Friday, April 23. The Crew Dragon is scheduled to dock to the space station Saturday, April 24, at approximately 5:10 a.m. EDT.

For an April 23 launch, the U.S. Space Force 45th Weather Squadron continues to predict a 90% chance of favorable weather conditions at the launch pad for liftoff based on Falcon 9 Crew Dragon launch weather criteria. The primary weather concerns for the launch area will be flight through precipitation from isolated, low-topped coastal showers and onshore flow. Conditions continue to improve along the flight path and recovery area for the mission.

Today, Thursday, April 22, is Earth Day. To commemorate this day, NASA is hosting Earth Day in Space. Singer-songwriter Shawn Mendes will join five astronauts living and working aboard the International Space to discuss how we’re all #ConnectedByEarth, asking questions from young people around the world about Earth Day, climate change and how the astronauts study Earth from space.

The event will feature NASA astronaut Mark Vande Hei, who recently arrived to the space station aboard a Soyuz, joining NASA astronauts Mike Hopkins, Victor Glover, Shannon Walker, and Japan Aerospace Exploration Agency astronaut Soichi Noguchi, the Crew-1 team who arrived last November. It will air live on NASA Television, the NASA app, and the agency’s YouTube channel and website at 11 a.m. EDT April 22.

The Crew-1 astronauts are scheduled to depart the space station at 7:05 a.m. Wednesday, April 28. They will participate in their final news conference aboard the microgravity laboratory at 12:30 p.m. EDT Monday, April 26, about their upcoming return to Earth. Media wishing to participate by telephone must call NASA’s Johnson Space Center’s newsroom at 281-483-5111 to RSVP no later than 5 p.m. Friday, April 23. The news conference will air live on NASA Television, the NASA app, and the agency’s website. Those following the briefing on social media may ask questions using #AskNASA.

Crew-1 worked on a number of experiments as part of Expedition 64 to the International Space Station, including tissue chips that mimic the structure and function of human organs to understand the role of microgravity on human health and diseases, and translate those findings to improve human health on Earth. Astronauts also grew radishes in different types of light and soils as part of ongoing efforts to produce food in space and tested a new system to remove heat from spacesuits.

Follow along with launch activities and get more information about the mission at: http://www.nasa.gov/crew-2. Learn more about commercial crew and space station activities by following: @Commercial_Crew@space_station, and @ISS_Research on Twitter as well as the Commercial Crew FacebookISS Facebook and ISS Instagram accounts.

Crew-1 Flight Readiness Review Discussions Continue; Media Teleconference to Follow

Crew-1 rocket on pad
A SpaceX Falcon 9 rocket with the company’s Crew Dragon spacecraft is seen on the launch pad at NASA Kennedy Space Center’s Launch Complex 39A in Florida on Tuesday, Nov. 10, after being rolled out overnight. Photo credit: NASA/Joel Kowsky

With the SpaceX Falcon 9 rocket and Crew Dragon capsule for the Crew-1 mission now at Launch Complex 39A at Kennedy Space Center, NASA and SpaceX teams participating both on site and virtually are continuing the agency’s Crew-1 Flight Readiness Review discussions that began Monday.

The two-day meeting is expected to end this afternoon, and approximately one hour after the review ends, the agency will hold a media teleconference with the following participants:

Crew-1 Flight Readiness Review
NASA and SpaceX leadership participate in a Flight Readiness Review at Kennedy on Nov. 9, 2020, for the agency’s SpaceX Crew-1 mission. Photo credit: NASA/Kim Shiflett
  • Kathy Lueders, associate administrator, Human Exploration and Operations Mission Directorate, NASA Headquarters
  • Steve Stich, manager, Commercial Crew Program, Kennedy
  • Joel Montalbano, manager, International Space Station, Johnson
  • Norm Knight, deputy manager, Flight Operations Directorate, Johnson
  • Benji Reed, senior director, Human Spaceflight Programs, SpaceX
  • Junichi Sakai, manager, International Space Station Program, JAXA
  • Randy Repcheck, director (acting), Operational Safety, Federal Aviation Administration

NASA astronauts Michael Hopkins, Victor Glover, and Shannon Walker, along with Soichi Noguchi of the Japan Aerospace Exploration Agency (JAXA), will launch on SpaceX’s Falcon 9 rocket and Crew Dragon spacecraft on the first crew rotation mission to the International Space Station as part of NASA’s Commercial Crew Program. Liftoff is scheduled for Saturday, Nov. 14, at 7:49 EST, from Launch Complex 39A at Kennedy.

Crew-1 astronauts will join the Expedition 64 crew of Commander Sergey Ryzhikov, and Flight Engineers Sergey Kud-Sverchkov and NASA astronaut Kate Rubins. The arrival of Crew-1 will increase the regular crew size of the space station’s expedition missions from six to seven astronauts, adding to the amount of crew time available for research.

NASA and SpaceX Teams Prepare for Crew-1 Mission

Crew-1 astronauts in training
NASA’s SpaceX Crew-1 astronauts participate in crew equipment interface testing at SpaceX headquarters in Hawthorne, California, on Sept. 24, 2020. From left are mission specialist Shannon Walker, pilot Victor Glover, and Crew Dragon commander Michael Hopkins, all NASA astronauts, and mission specialist Soichi Noguchi, Japan Aerospace Exploration Agency (JAXA) astronaut. Photo credit: SpaceX

By Jim Cawley
NASA’s Kennedy Space Center

Teams involved with NASA’s SpaceX Crew-1 mission held a series of briefings Tuesday at the agency’s Johnson Space Center about the first crew rotation mission to the International Space Station as part of the agency’s Commercial Crew Program. The mission is targeted to launch at 2:40 a.m. EDT Saturday, Oct. 31, on SpaceX’s Crew Dragon spacecraft and Falcon 9 rocket from Launch Complex 39A at NASA’s Kennedy Space Center in Florida.

NASA astronauts Michael Hopkins, Victor Glover, and Shannon Walker, along with Soichi Noguchi of the Japan Aerospace Exploration Agency (JAXA), will be the first international crew to launch on the new, commercially owned and operated American system.

“What’s exciting about this upcoming mission is that we are actually going to fly a certified Crew Dragon,” said NASA Administrator Jim Bridenstine. “This is another milestone; a critical milestone in the development of our ability to launch American astronauts on American rockets from American soil — now sustainably.”

Crew-1 preflight briefing
From left, NASA Administrator Jim Bridenstine, Kathy Lueders, associate administrator, Human Exploration and Operations Mission Directorate, NASA Headquarters, and Hans Koenigsmann, vice president, Build and Flight Reliability, SpaceX, participate in a Crew-1 preflight briefing on Sept. 29, 2020. NASA image

NASA and SpaceX are in the final stages of the certification reviews following the agency’s SpaceX Demo-2 test flight to the space station with astronauts Robert Behnken and Douglas Hurley, which is helping verify the end-to-end capabilities, including launch, docking and return to Earth.

Teams currently are completing and applying lessons learned from Demo-2 and other test flights, including redesign of a small area of the thermal protection system around the trunk attachments, modifications to the ventilation system on the nosecone of the Dragon spacecraft, and design adjustment for measuring the barometric pressure used for parachute deployment. The teams also are coordinating with the U.S. Coast Guard to ensure crew safety upon splashdown, including extra ships and air assets to patrol the “keep out” zone to mitigate safety concerns for boaters approaching the landing area.

“This is a great milestone for us; it’s a culmination of many, many years of work with NASA and SpaceX,” said Kathy Lueders, associate administrator, Human Exploration and Operations Mission Directorate, NASA Headquarters. “This has been a dream of ours to have commercial crew rotation seats up on the station, and we’re looking forward to many more to come.”

After certification, Crew Dragon will be the first commercial system in history capable of transporting humans to and from the space station.

“This is all leading up to the big operational cadence that we’re about to move into — and this is super cool,” said Benji Reed, senior director, Human Spaceflight Programs, SpaceX. “We’re at a point now where we are in the final lane; we’re getting ready for this launch.”

Crew-1 astronauts
From left, Crew-1 astronauts Shannon Walker, Victor Glover, Michael Hopkins and Soichi Noguchi announced Sept. 29, 2020, that the name of their spaceship is Resilience. NASA image

Following an Oct. 31 launch, the Crew-1 astronauts are scheduled to arrive at the space station the next day to join NASA astronaut Kate Rubins, as well as Expedition 64 commander Sergey Ryzhikov and flight engineer Sergey Kud-Sverchkov, both of the Russian space agency Roscosmos.

“It’s going to be an exciting time onboard the space station,” said Kenny Todd, deputy manager, International Space Station, NASA’s Johnson Space Center. “We’re looking forward to getting up to seven crew.”

Hopkins, Glover, Walker, and Noguchi will become the first crew to fly a full-duration mission to the space station on SpaceX’s Crew Dragon spacecraft for a six-month stay on the orbiting laboratory. For the first time, the space station’s crew will expand to seven people with Expedition 64, increasing the amount of crew time available for research.

As commander of the Crew Dragon spacecraft and the Crew-1 mission, Hopkins is responsible for all phases of flight, from launch to re-entry. He also will serve as an Expedition 64 flight engineer aboard the station. The Crew-1 astronauts named the spacecraft Resilience, highlighting the dedication the teams involved with the mission have displayed and demonstrating that when we work together, there is no limit to what we can achieve.

“As you look at the definition of resilience, I know it means functioning well in times of stress or overcoming adverse events, and I think all of us can agree that 2020 certainly has been a challenging year,” Hopkins said.

“So the name ‘Resilience’ is really in honor of the SpaceX and NASA teams, and quite frankly, it’s in honor of our families, of our colleagues, of our fellow citizens, of our international partners and our leaders that have all shown that same quality — that same characteristic — through these difficult times.”

As mission specialists, Walker and Noguchi will work closely with the commander and pilot to monitor the vehicle during the dynamic launch and re-entry phases of flight. Both are spaceflight veterans: Dragon will be the third spacecraft on which Noguchi has traveled (he flew aboard NASA’s space shuttle and a Russian Soyuz spacecraft), while Walker has spent 161 days on the orbiting laboratory.

“It’s been a very intense six months’ worth of training, but we are ready, and I am very excited to get back to the space station,” Walker said. “My experience of having already lived and worked there will give me a huge head start and make me much more efficient.”

Noguchi expressed the significance of teamwork and diversity, adding further meaning to the spacecraft’s new name.

“All of us are contributing to this wonderful team; everybody brings something to the table,” Noguchi said. “This diversity definitely brings the team’s resilience.”

For almost 20 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. NASA is enabling economic growth in low-Earth orbit to open access to space to more people, more science, and more companies than ever before.

“To be able to live on the space station for six months and during that time to be there for the 20th anniversary of human presence on the space station — and to potentially launch on the 20th anniversary of the launch of Expedition 1 — is just special,” said Glover, pilot of the Crew Dragon and second-in-command for the mission. “[It] relates to something Mike said earlier — that the power of teamwork, when we come together to work on the same thing, there’s no limit to what we can accomplish. It is truly a privilege.”

NASA, SpaceX Successfully Launch Demo-2 Mission

Demo-2 liftoff
A SpaceX Falcon 9 rocket carrying the company’s Crew Dragon spacecraft lifts off from Launch Complex 39A at NASA’s Kennedy Space Center in Florida on May 30, 2020, carrying NASA astronauts Robert Behnken and Douglas Hurley to the International Space Station for the agency’s SpaceX Demo-2 mission. Image credit: NASA TV

The SpaceX Falcon 9 rocket, carrying NASA astronauts Robert Behnken and Douglas Hurley aboard the company’s Crew Dragon spacecraft, lifted off from Kennedy Space Center’s historic Launch Pad 39A at 3:22 p.m. EDT.

Behnken and Hurley are on their way to the International Space Station, where they will become part of the Expedition 63 crew, joining astronaut Chris Cassidy and cosmonauts Ivan Vagner and Anatoly Ivanishin.

The Demo-2 mission is SpaceX’s final test flight for NASA’s Commercial Crew Program and will provide critical data on the performance of the Falcon 9 rocket, Crew Dragon spacecraft and ground systems, as well as in-orbit, docking and landing operations.

For continuing coverage of NASA’s Demo-2 launch, follow along at blogs.nasa.gov/spacestation. To look back at launch coverage, visit the agency’s Commercial Crew Program blog at http://blogs.nasa.gov/commercialcrew.

NASA, SpaceX Prepare for Second Attempt at Historic Demo-2 Launch

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Pad 39A at Kennedy Space Center in Florida at 3:22 p.m. today, carrying American NASA astronauts Robert Behnken and Douglas Hurley to the International Space Station. Photo credit: NASA/Joel Kowsky

Live coverage of NASA’s SpaceX Demo-2 launch activities has begun. The broadcast started at 11 a.m., and will continue leading up to liftoff and through arrival at the space station at 10:29 a.m. on Sunday, May 31. Watch it on NASA Television and online at http://www.nasa.gov/live.

A SpaceX Falcon 9 rocket and Crew Dragon spacecraft will lift off from Launch Pad 39A at Kennedy Space Center in Florida this afternoon, carrying American NASA astronauts Robert Behnken and Douglas Hurley to the International Space Station. Launch is targeted for 3:22 p.m. EDT. The launch window is instantaneous.

According to the latest report from the 45th Weather Squadron at Patrick Air Force Base, the probability of violating weather restraints remains at 50%. Primary concerns are flight through precipitation, anvil cloud rule and cumulus cloud rule.

This will be SpaceX’s final test flight for NASA’s Commercial Crew Program and will provide critical data on the performance of the Falcon 9 rocket, Crew Dragon spacecraft, and ground systems, as well as in-orbit, docking, and landing operations.

For continuing coverage of NASA’s Demo-2 launch, follow along with the agency’s Commercial Crew Program blog at http://blogs.nasa.gov/commercialcrew.