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By NASA
The SpaceX Dragon spacecraft carrying the Axiom Mission 3 crew is pictured approaching the International Space Station on Jan. 20, 2024.Credit: NASA NASA, Axiom Space, and SpaceX are targeting 8:22 a.m. EDT, Tuesday, June 10, for launch of the fourth private astronaut mission to the International Space Station, Axiom Mission 4.
The mission will lift off from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. The crew will travel to the orbiting laboratory on a new SpaceX Dragon spacecraft after launching on the company’s Falcon 9 rocket. The targeted docking time is approximately 12:30 p.m., Wednesday, June 11.
NASA will stream live coverage of launch and arrival activities on NASA+. Learn how to watch NASA content through a variety of platforms, including social media.
NASA’s mission responsibility is for integrated operations, which begins during the spacecraft’s approach to the space station, continues during the crew’s approximately two-week stay aboard the orbiting laboratory while conducting science, education, and commercial activities, and concludes once the spacecraft exits the station.
Peggy Whitson, former NASA astronaut and director of human spaceflight at Axiom Space, will command the commercial mission, while ISRO (Indian Space Research Organisation) astronaut Shubhanshu Shukla will serve as pilot. The two mission specialists are ESA (European Space Agency) project astronaut Sławosz Uznański-Wiśniewski of Poland and Tibor Kapu of Hungary.
As part of a collaboration between NASA and ISRO, Axiom Mission 4 delivers on a commitment highlighted by President Trump and Indian Prime Minister Narendra Modi to send the first ISRO astronaut to the station. The space agencies are participating in five joint science investigations and two in-orbit science, technology, engineering, and mathematics demonstrations. NASA and ISRO have a long-standing relationship built on a shared vision to advance scientific knowledge and expand space collaboration.
The private mission also carries the first astronauts from Poland and Hungary to stay aboard the space station.
NASA will join the mission prelaunch teleconference hosted by Axiom Space (no earlier than one hour after completion of the Launch Readiness Review) at 6 p.m., Monday, June 9, with the following participants:
Dana Weigel, manager, International Space Station Program, NASA Allen Flynt, chief of mission services, Axiom Space William Gerstenmaier, vice president, Build and Flight Reliability, SpaceX Arlena Moses, launch weather officer, 45th Weather Squadron, U.S. Space Force To join the teleconference, media must register with Axiom Space by 12 p.m., Sunday, June 8, at:
https://bit.ly/4krAQHK
NASA’s mission coverage is as follows (all times Eastern and subject to change based on real-time operations):
Tuesday, June 10
6:15 a.m. – Axiom Space and SpaceX launch coverage begins.
7:25 a.m. – NASA joins the launch coverage on NASA+.
8:22 a.m. – Launch
NASA will end coverage following orbital insertion, which is approximately 15 minutes after launch. As it is a commercial launch, NASA will not provide a clean launch feed on its channels.
Wednesday, June 11
10:30 a.m. – Arrival coverage begins on NASA+, Axiom Space, and SpaceX channels.
12:30 p.m. – Targeted docking to the space-facing port of the station’s Harmony module.
Arrival coverage will continue through hatch opening and welcome remarks.
All times are estimates and could be adjusted based on real-time operations after launch. Follow the space station blog for the most up-to-date operations information.
The International Space Station is a springboard for developing a low Earth economy. NASA’s goal is to achieve a strong economy off the Earth where the agency can purchase services as one of many customers to meet its science and research objectives in microgravity. NASA’s commercial strategy for low Earth orbit provides the government with reliable and safe services at a lower cost, enabling the agency to focus on Artemis missions to the Moon in preparation for Mars while also continuing to use low Earth orbit as a training and proving ground for those deep space missions.
Learn more about NASA’s commercial space strategy at:
https://www.nasa.gov/commercial-space
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Claire O’Shea
Headquarters, Washington
202-358-1100
claire.a.o’shea@nasa.gov
Anna Schneider
Johnson Space Center, Houston
281-483-5111
anna.c.schneider@nasa.gov
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Last Updated Jun 04, 2025 EditorJessica TaveauLocationNASA Headquarters Related Terms
Private Astronaut Missions Commercial Space Humans in Space International Space Station (ISS) ISS Research Johnson Space Center Kennedy Space Center View the full article
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By NASA
NASA and ISRO (Indian Space Research Organisation) are collaborating to launch scientific investigations aboard Axiom Mission 4, the fourth private astronaut mission to the International Space Station. These studies include examining muscle regeneration, growth of sprouts and edible microalgae, survival of tiny aquatic organisms, and human interaction with electronic displays in microgravity.
The mission is targeted to launch no earlier than Tuesday, June 10, aboard a SpaceX Dragon spacecraft on the company’s Falcon 9 rocket from NASA’s Kennedy Space Center in Florida
Regenerating muscle tissue
Immunofluorescent image of human muscle fibers for Myogenesis-ISRO, showing nuclei (blue) and proteins (red).Institute for Stem Cell Science and Regenerative Medicine, India During long-duration spaceflights, astronauts lose muscle mass, and their muscle cells’ regenerative ability declines. Researchers suspect this may happen because microgravity interferes with metabolism in mitochondria, tiny structures within cells that produce energy. The Myogenesis-ISRO investigation uses muscle stem cell cultures to examine the muscle repair process and test chemicals known to support mitochondrial function. Results could lead to interventions that maintain muscle health during long-duration space missions, help people on Earth with age-related muscle loss and muscle-wasting diseases, and assist athletes and people recovering from surgery.
Sprouting seeds
This preflight image shows sprouted fenugreek seeds for the Sprouts-ISRO investigation.Ravikumar Hosamani Lab, University of Agricultural Sciences, India The Sprouts-ISRO investigation looks at the germination and growth in microgravity of seeds from greengram and fenugreek, nutritious plants commonly eaten on the Indian subcontinent. Bioactive compounds in fenugreek seeds also have therapeutic properties, and the leaves contain essential vitamins and minerals. Learning more about how space affects the genetics, nutritional content, and other characteristics over multiple generations of plants could inform the development of ways for future missions to reliably produce plants as a food source.
Microalgae growth
Culture bags for Space Microalgae-ISRO.Redwire Space Microalgae-ISRO studies how microgravity affects microalgae growth and genetics. Highly digestible microalgae species packed with nutrients could be a food source on future space missions. These organisms also grow quickly, produce energy and oxygen, and consume carbon dioxide, traits that could be employed in life support and fuel systems on spacecraft and in certain scenarios on Earth.
Tiny but tough
NASA astronaut Peggy Whitson sets up the BioServe microscope, which will be used by the Voyager Tardigrade-ISRO investigation.NASA Tardigrades are tiny aquatic organisms that can tolerate extreme conditions on Earth. Voyager Tardigrade-ISRO tests the survival of a strain of tardigrades in the harsh conditions of space, including cosmic radiation and ultra-low temperatures, which kill most life forms. Researchers plan to revive dormant tardigrades, count the number of eggs laid and hatched during the mission, and compare the gene expression patterns of populations in space and on the ground. Results could help identify what makes these organisms able to survive extreme conditions and support development of technology to protect astronauts on future missions and those in harsh environments on Earth.
Improving electronic interactions
NASA astronaut Loral O’Hara interacts with a touchscreen. Voyager Displays-ISRO examines how spaceflight affects use of such devices.NASA Research shows that humans interact with touchscreen devices differently in space. Voyager Displays – ISRO examines how spaceflight affects interactions with electronic displays such as pointing tasks, gaze fixation, and rapid eye movements along with how these interactions affect the user’s feelings of stress or wellbeing. Results could support improved design of control devices for spacecraft and habitats on future space missions as well as for aviation and other uses on Earth.
Download high-resolution photos and videos of the research mentioned in this article.
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By NASA
X-ray: NASA/CXC/CfA/Stroe, A. et al.; Optical: PanSTARRS; Radio: ASTRON/LOFAR; Image Processing: NASA/CXC/SAO/N. Wolk New observations from NASA’s Chandra X-ray Observatory and other telescopes have captured a rare cosmic event: two galaxy clusters have collided and are now poised to head back for another swipe at each other.
Galaxy clusters are some of the largest structures in the Universe. Held together by gravity, they are monster-sized collections of hundreds or thousands of individual galaxies, massive amounts of superheated gas, and invisible dark matter.
The galaxy cluster PSZ2 G181.06+48.47 (PSZ2 G181 for short) is about 2.8 billion light-years from Earth. Previously, radio observations from the LOw Frequency ARray (LOFAR), an antenna network in the Netherlands, spotted parentheses-shaped structures on the outside of the system. In this new composite image, X-rays from Chandra (purple) and ESA’s XMM-Newton (blue) have been combined with LOFAR data (red) and an optical image from Pan-STARRs of the stars in the field of view.
These structures are probably shock fronts — similar to those created by jets that have broken the sound barrier — likely caused by disruption of gas from the initial collision about a billion years ago. Since the collision they have continued traveling outwards and are currently separated by about 11 million light-years, the largest separation of these kinds of structures that astronomers have ever seen.
Colliding galaxy clusters PSZ2 G181.06+48.47 (Labeled).X-ray: NASA/CXC/CfA/Stroe, A. et al.; Optical: PanSTARRS; Radio: ASTRON/LOFAR; Image Processing: NASA/CXC/SAO/N. Wolk Now, data from NASA’s Chandra and ESA’s XMM-Newton is providing evidence that PSZ2 G181 is poised for another collision. Having a first pass at ramming each other, the two clusters have slowed down and begun heading back toward a second crash.
Astronomers made a detailed study of the X-ray observations of this collision site and found three shock fronts. These are aligned with the axis of the collision, and the researchers think they are early signs of the second, oncoming crash.
The researchers are still trying to determine how much mass each of the colliding clusters contains. Regardless, the total mass of the system is less than others where galaxy clusters have collided. This makes PSZ2 G181 an unusual case of a lower-mass system involved in the rare event of colliding galaxy clusters.
A paper describing these results appears in a recent issue of The Astrophysical Journal (ApJ) and is led by Andra Stroe from the Center for Astrophysics | Harvard & Smithsonian (CfA) and collaborators. It is part of a series of three papers in ApJ. The second paper is led by Kamlesh Rajpurohit, also of CfA, and the third paper is led by Eunmo Ahn, from Yonsei University in the Republic of Korea.
NASA’s Marshall Space Flight Center in Huntsville, Alabama, manages the Chandra program. The Smithsonian Astrophysical Observatory’s Chandra X-ray Center controls science operations from Cambridge, Massachusetts, and flight operations from Burlington, Massachusetts.
Read more from NASA’s Chandra X-ray Observatory Learn more about the Chandra X-ray Observatory and its mission here:
https://www.nasa.gov/chandra
https://chandra.si.edu
Visual Description
In this release, a composite image illustrates a dramatic cosmic story unfolding 2.8 billion light years from Earth. Presented both with and without labels, the image details the fallout when two galaxy clusters collide.
At the center of the image are the colliding galaxy clusters, which together are known as PSZ2 G181. This combined cluster somewhat resembles an irregular violet peanut shell, with bulbous ends linked by a tapered middle. Inside each bulbous end are several glowing dots; some of the galaxies within the clusters. The violet peanut shape is tilted at a slight angle, surrounded by a blue haze of X-ray gas.
Far from the bulbous ends, at our upper left and lower right, are two blotchy, thick red lines. These are probably shock fronts, similar to those created by jets that have broken the sound barrier. Bracketing the combined galaxy cluster, these shock fronts were caused by the initial collision about a billion years ago. They are currently separated by 11 million light-years.
New data from the Chandra and XMM-Newton observatories suggests that PSZ2 G181 is poised for another powerful cosmic event. Having already taken one swipe at each other, the two clusters within are once again on a collision course.
News Media Contact
Megan Watzke
Chandra X-ray Center
Cambridge, Mass.
617-496-7998
mwatzke@cfa.harvard.edu
Lane Figueroa
Marshall Space Flight Center, Huntsville, Alabama
256-544-0034
lane.e.figueroa@nasa.gov
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Last Updated Jun 04, 2025 Related Terms
Chandra X-Ray Observatory Galaxies Galaxy clusters Marshall Astrophysics Marshall Space Flight Center The Universe
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By NASA
5 Min Read 3 Black Holes Caught Eating Massive Stars in NASA Data
A disk of hot gas swirls around a black hole in this illustration. Some of the gas came from a star that was pulled apart by the black hole, forming the long stream of hot gas on the right, feeding into the disk. Credits:
NASA/JPL-Caltech Black holes are invisible to us unless they interact with something else. Some continuously eat gas and dust, and appear to glow brightly over time as matter falls in. But other black holes secretly lie in wait for years until a star comes close enough to snack on.
Scientists have recently identified three supermassive black holes at the centers of distant galaxies, each of which suddenly brightened when it destroyed a star and then stayed bright for several months. A new study using space and ground-based data from NASA, ESA (European Space Agency), and other institutions presents these rare occurrences as a new category of cosmic events called “extreme nuclear transients.”
Looking for more of these extreme nuclear transients could help unveil some of the most massive supermassive black holes in the universe that are usually quiet.
“These events are the only way we can have a spotlight that we can shine on otherwise inactive massive black holes,” said Jason Hinkle, graduate student at the University of Hawaii and lead author of a new study in the journal Science Advances describing this phenomenon.
The black holes in question seem to have eaten stars three to 10 times heavier than our Sun. Feasting on the stars resulted in some of the most energetic transient events ever recorded.
This illustration shows a glowing stream of material from a star as it is being devoured by a supermassive black hole. When a star passes within a certain distance of a black hole — close enough to be gravitationally disrupted — the stellar material gets stretched and compressed as it falls into the black hole. NASA/JPL-Caltech These events as unleash enormous amount of high-energy radiation on the central regions of their host galaxies. “That has implications for the environments in which these events are occurring,” Hinkle said. “If galaxies have these events, they’re important for the galaxies themselves.”
The stars’ destruction produces high-energy light that takes over 100 days to reach peak brightness, then more than 150 days to dim to half of its peak. The way the high-energy radiation affects the environment results in lower-energy emissions that telescopes can also detect.
One of these star-destroying events, nicknamed “Barbie” because of its catalog identifier ZTF20abrbeie, was discovered in 2020 by the Zwicky Transient Facility at Caltech’s Palomar Observatory in California, and documented in two 2023 studies. The other two black holes were detected by ESA’s Gaia mission in 2016 and 2018 and are studied in detail in the new paper.
NASA’s Neil Gehrels Swift Observatory was critical in confirming that these events must have been related to black holes, not stellar explosions or other phenomena. The way that the X-ray, ultraviolet, and optical light brightened and dimmed over time was like a fingerprint matching that of a black hole ripping a star apart.
Scientists also used data from NASA’s WISE spacecraft, which was operated from 2009 to 2011 and then was reactivated as NEOWISE and retired in 2024. Under the WISE mission the spacecraft mapped the sky at infrared wavelengths, finding many new distant objects and cosmic phenomena. In the new study, the spacecraft’s data helped researchers characterize dust in the environments of each black hole. Numerous ground-based observatories additionally contributed to this discovery, including the W. M. Keck Observatory telescopes through their NASA-funded archive and the NASA-supported Near-Earth Object surveys ATLAS, Pan-STARRS, and Catalina.
“What I think is so exciting about this work is that we’re pushing the upper bounds of what we understand to be the most energetic environments of the universe,” said Anna Payne, a staff scientist at the Space Telescope Science Institute and study co-author, who helped look for the chemical fingerprints of these events with the University of Hawaii 2.2-meter Telescope.
A Future Investigators in NASA Earth and Space Science and Technology (FINESST) grant from the agency helped enable Hinkle to search for these black hole events. “The FINESST grant gave Jason the freedom to track down and figure out what these events actually were,” said Ben Shappee, associate professor at the Institute for Astronomy at the University of Hawaii, a study coauthor and advisor to Hinkle.
Hinkle is set to follow up on these results as a postdoctoral fellow at the University of Illinois Urbana-Champaign through the NASA Hubble Fellowship Program. “One of the biggest questions in astronomy is how black holes grow throughout the universe,” Hinkle said.
The results complement recent observations from NASA’s James Webb Space Telescope showing how supermassive black holes feed and grow in the early universe. But since only 10% of early black holes are actively eating gas and dust, extreme nuclear transients — that is, catching a supermassive black hole in the act of eating a massive star — are a different way to find black holes in the early universe.
Events like these are so bright that they may be visible even in the distant, early universe. Swift showed that extreme nuclear transients emit most of their light in the ultraviolet. But as the universe expands, that light is stretched to longer wavelengths and shifts into the infrared — exactly the kind of light NASA’s upcoming Nancy Grace Roman Space Telescope was designed to detect.
With its powerful infrared sensitivity and wide field of view, Roman will be able to spot these rare explosions from more than 12 billion years ago, when the universe was just a tenth of its current age. Scheduled to launch by 2027, and potentially as early as fall 2026, Roman could uncover many more of these dramatic events and offer a new way to explore how stars, galaxies, and black holes formed and evolved over time.
“We can take these three objects as a blueprint to know what to look for in the future,” Payne said.
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By NASA
The core portion of NASA’s Nancy Grace Roman Space Telescope has successfully completed vibration testing, ensuring it will withstand the extreme shaking experienced during launch. Passing this key milestone brings Roman one step closer to helping answer essential questions about the role of dark energy and other cosmic mysteries.
“The test could be considered as powerful as a pretty severe earthquake, but there are key differences,” said Cory Powell, the Roman lead structural analyst at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “Unlike an earthquake, we sweep through our frequencies one at a time, starting with very low-level amplitudes and gradually increasing them while we check everything along the way. It’s a very complicated process that takes extraordinary effort to do safely and efficiently.”
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This video shows the core components of NASA’s Nancy Grace Roman Space Telescope undergoing a vibration test at the agency’s Goddard Space Flight Center. The test ensures this segment of the observatory will withstand the extreme shaking associated with launch. Credit: NASA’s Goddard Space Flight Center The team simulated launch conditions as closely as possible. “We performed the test in a flight-powered configuration and filled the propulsion tanks with approximately 295 gallons of deionized water to simulate the propellent loading on the spacecraft during launch,” said Joel Proebstle, who led this test, at NASA Goddard. This is part of a series of tests that ratchet up to 125 percent of the forces the observatory will experience.
This milestone is the latest in a period of intensive testing for the nearly complete Roman Space Telescope, with many major parts coming together and running through assessments in rapid succession. Roman currently consists of two major assemblies: the inner, core portion (telescope, instrument carrier, two instruments, and spacecraft) and the outer portion (outer barrel assembly, solar array sun shield, and deployable aperture cover).
Now, having completed vibration testing, the core portion will return to the large clean room at Goddard for post-test inspections. They’ll confirm that everything remains properly aligned and the high-gain antenna can deploy. The next major assessment for the core portion will involve additional tests of the electronics, followed by a thermal vacuum test to ensure the system will operate as planned in the harsh space environment.
This video highlights some of the important hardware milestones as NASA’s Nancy Grace Roman Space Telescope moves closer to completion. The observatory is almost fully assembled, currently built up into two large pieces: the inner portion (telescope, instrument carrier, two instruments, and spacecraft) and outer portion (outer barrel assembly, solar array sun shield, and deployable aperture cover). This video shows the testing these segments have undergone between February and May 2025. Credit: NASA’s Goddard Space Flight Center In the meantime, Goddard technicians are also working on Roman’s outer portion. They installed the test solar array sun shield, and this segment then underwent its own thermal vacuum test, verifying it will control temperatures properly in the vacuum of space. Now, technicians are installing the flight solar panels to this outer part of the observatory.
The team is on track to connect Roman’s two major assemblies in November, resulting in a whole observatory by the end of the year that will then undergo final tests. Roman remains on schedule for launch by May 2027, with the team aiming for as early as fall 2026.
Click here to virtually tour an interactive version of the telescope The Nancy Grace Roman Space Telescope is managed at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, with participation by NASA’s Jet Propulsion Laboratory in Southern California; Caltech/IPAC in Pasadena, California; the Space Telescope Science Institute in Baltimore; and a science team comprising scientists from various research institutions. The primary industrial partners are BAE Systems Inc. in Boulder, Colorado; L3Harris Technologies in Rochester, New York; and Teledyne Scientific & Imaging in Thousand Oaks, California.
By Ashley Balzer
NASA’s Goddard Space Flight Center, Greenbelt, Md.
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Last Updated Jun 04, 2025 Related Terms
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