Growing Future Scientists with Plant Signaling Space Study

In today’s A Lab Aloft guest post, International Space Station Plant Signaling study Principal Investigator Imara Perera, Ph.D., shares the importance of involving students in science today to groom them for careers in research tomorrow.

I find working with the International Space Station for plant growth studies inspiring, and it’s important to me to share my enthusiasm with the next generation of researchers. Most of the students that work with me in the lab come through some sort of internship program and get class credit for doing research. Students can also apply for research awards from North Carolina State University to fund their work.

My current project, Plant Signaling, generated a lot of interest when I spoke at the university biology club. This talk resulted in several volunteers who wanted to work in the lab, because everyone is excited about doing experiments in space.

The flight portion of the investigation went well. We have images from two experimental runs in the European Modular Cultivation System (EMCS) centrifuge, which the students help us analyze for measurements of plant growth. For the analysis, students measure the root lengths in flight photos to get an idea of the total amount of growth.

Astronaut Michael Lopez-Alegria works with European Modular Cultivation System experiment containers aboard the International Space Station. (NASA)

We have many images from both the micro-g and 1g environment samples thanks to the setup of the EMCS. The EMCS has two chambers, which is nice because it includes two centrifuges. This allows you to do your 1g ground control in space at the same time you do the microgravity testing. This means you only have the one variable of microgravity, while all other aspects of the space environment are the same.

Usually for microgravity studies you do a ground control vs. a flight experiment; but, it’s not just the gravity that’s different. There are other things that you cannot measure or replicate from that environment, such as radiation, vibration or the presence of other gases. This is a very beneficial control if you want to get at just the difference between microgravity and 1g. In addition, by carrying out a ground reference control on Earth, we can get an idea of some of the other space effects that are not so well defined at this time.

View of the European Modular Cultivation System experiment container replace activity performed in the Destiny laboratory module of the International Space Station. (NASA)

We would like to do more advanced analysis to see if there is any difference in the microgravity vs. the 1g plants. We expect less organized growth in space compared to on the ground, however this is not obvious from looking at the images. We may need to analyze the images more closely, and we are looking at options to see whether or not the pattern of growth is different. As of now we’ve just looked at the total amount of growth and there does not appear to be major differences.

Flight samples returned to Earth with SpaceX Dragon on March 26, so once we get them we can analyze the genetics of the physical samples to understand their changes at a molecular level—specifically in how the plants sense the microgravity environment and how this influences their growth and development. To do that, we will carry out global transcription profiles of the plants, which is like taking a “snapshot” of all the genes that were expressed in the plant. This tells us how the plants are responding, because even though they may look the same, at a molecular level there may be different pathways that are up or down regulated—showing an increase or decrease in cell response—in the transgenic line compared to the wild type.

Students Will Smith (left) and Peter Svizeny (right) working with plants at the North Carolina State University lab. (North Carolina State University)

One student, Benjamin Cowen, was from the physical sciences, and he did some ground-based work using some of the prototype hardware that we use for the flight experiment. It was quite an inspiration for him, and now he’s looking to enter an astrobiology graduate program. It’s useful to have the different backgrounds, because people do not have the same preconceived ideas that we may have developed in biology studies.

I’ve had positive feedback from participating students, including some who have returned to continue working on the study. I had one local high school student, Kalyani Joshi, who came to talk to me before the investigation went up on the flight to the space station. Kalyani was excited about the study and came to volunteer and work in the lab. When she graduated from high school, she applied and was admitted to North Carolina State University. Now she’s a freshman and received some undergraduate research funding, so she’s going to continue to work in the lab. Kalyani’s been doing a lot of the measurements of the space images and really enjoys the project.

The patch design for the International Space Station Plant Signaling investigation. (NASA)

When we were preparing for the experiment, I had another student, Caroline Smith, who worked as my research associate. She is in graduate school now, but plans to come back to help analyze the flight samples. She’s really interested in the findings, as she was instrumental in setting up the experiment.

Research Associate Caroline Smith (foreground) works alongside Principal Investigator Imara Perera at NASA’s Ames Research Center, Moffett Field, Calif., assembling the Plant Signaling investigation. (NASA)

I’m highly committed to including students in the lab setting, having worked with half a dozen for this research project. I anticipate continuing to foster that collaboration. It will be fascinating to see not only what we learn when the Plant Signaling samples come in for analysis, but also to see what comes next for the students inspired by this study.

Imara Perera, principal investigator for the International Space Station Plant Signaling investigation shown here in the lab at North Carolina State University. (North Carolina State University)

Imara Perera, Ph.D., is a research associate professor in the Department of Plant Biology at North Carolina State University. Her primary research interests are in understanding the role of lipid-mediated signaling in plant responses to environmental signals and stress, with the long term goal of improving plant growth under unfavorable conditions. She has been involved in plant gravitational biology research since her postdoctoral work, and she has been a principal investigator on NASA-funded ground-based research since 2001. Currently, Perera is the principal investigator on a spaceflight project entitled “Plant Signaling in Microgravity” to characterize the molecular mechanisms of plant responses to microgravity that was conducted aboard the International Space Station in 2011. 

The International Space Station: Scientific Melting Pot

In today’s A Lab Aloft entry, guest blogger Assistant International Space Station Program Scientist Kirt Costello shares how the various science disciplines studied aboard the International Space Station can work in concert to enhance research goals.

By now, if you are a follower of this blog or just a follower of the International Space Station, you are familiar with the tremendous international effort it took to assemble this laboratory in orbit and bring its facilities up to their full potential. The contributions of 15 nations over the last decade have resulted in this unique resource with its access to the microgravity environment, stable viewpoints of Earth and space, as well as access to the orbital environment—namely radiation and the vacuum of space. But what does the cooperative environment that went into building the station mean for the long term science prospects that are now ramping up to their full potential?

The space station has become a scientific melting pot. Similar to the benefits that immigration brought to North America during the industrial revolution, the station is poised to provide benefits to the scientific community and any young pioneers willing to take up the challenge to use this outpost on the frontier of space. The station is also a U.S. National Laboratory, with research facilities that support human biomedical research, animal and plant physiology, materials science, fluid and combustion physics, remote Earth observations, and advanced engineering and technology demonstrations, side-by-side-by-side.

This multidisciplinary research facility presents a rare opportunity for researchers. The dedicated research facility is still much more common than the multidisciplinary facility, typically limiting researchers to just one field of scientific investigation.   Aboard station the experiments from these vastly different fields literally run right next to one another. The astronauts who make many of these investigations possible often have different scientific backgrounds from the principal investigators they are working with on the ground. This opens the potential for dialogue and insights as the studies progress.

The spirit of cooperation that was required in building the space station is still very much evident  today. Different investigations on board may cooperatively share equipment to accomplish their research objectives, minimizing the cost and mass to launch and maximizing the use of in-orbit resources.

One such example of resource sharing that is possible aboard station is in the sharing of camera equipment and software for the Binary Colloid Alloy Test (BCAT) and the Earth Knowledge Acquired by Middle School Students (EarthKAM). BCAT is a set of fluid physics experiments to examine the traits of super-critical fluids and phase separation of fluids. Meanwhile, EarthKAM is an educational outreach study focusing on remote Earth observation and using the capabilities of the EarthKAM camera to engage students, teachers and researchers in collaborative investigations. These two studies may seem worlds apart, but it is because the BCAT investigation is able to use the automated EarthKAM camera and software that BCAT was able to run many samples without requiring an undue amount of crew time.

EarthKAM equipment set up for a view of the Earth from the orbital perspective of the International Space Station. (NASA)

Astronaut Cady Coleman uses EarthKAM equipment to document an experiment run of the Binary Colloid Alloy Test (BCAT) study aboard the International Space Station. (NASA)

So why is multidisciplinary research a good thing to promote? For one thing, it often leads to innovation. The explanation for this is something we’ve all experienced from time to time. It’s much like when you get stuck on a problem. You can stare at it for hour upon hour and just not see the solution. Yet if the right friend happens along, they might see something you’ve been missing and the problem is solved in next to no time. Frustrating, sure, but sometimes a different perspective is all that is needed to reach a breakthrough.

Multidisciplinary science tries to capitalize on the benefits of having different scientific backgrounds engage and become part of the solution to a complex problem. Admittedly, a physicist and a biologist may look at a problem and see vastly different solutions, but when multiple disciplines and multiple participants work together to solve the same problem it opens the doorway to true innovation.

A great recent example is the interaction between the BCAT-6 principal investigator Matthew Lynch and Expedition 30 crew member Don Pettit. Lynch and Pettit worked together to achieve a more detailed image of the BCAT phase separation sample. Pettit suggested using a laser pointer source on orbit to attempt to reveal any diffraction—when light bends around an object—patterns that showed the structures and phase separation characteristics they were looking for. It worked! Innovation was born at the intersection of fluid physics, optical physics and chemical engineering.

Concept for how diffraction patterns can be detected from suspensions of colloidal particles. Irregular diffraction patterns result from irregular particle spacing, however, the presence of the pattern allows you to know when the colloidal particle groups are within the field of the camera. (Illustration by O.M. Yetfanov. Used with permission Journal of Biotechnology/A.P. Mancuso, O.M. Yetfanov, et. al.,)

Co-location is another obvious advantage of the station as a research platform. To date there have been several investigations directed at in-house resource production, such as Tomatosphere, which run in the LADA greenhouse and the Biomass Production System (BPS), to name a few. Additionally there have been multiple experiments designed to help better understand the burning of fuels in the Combustion Integrate Rack (CIR) and the Microgravity Science Glovebox (MSG), like the FLEX-2, SPICE and SLICE investigations. As a result of such studies, crew members may someday grow their own fruits and vegetables to eat or be able to fuel up the engines of the future.

NASA astronaut Mike Fossum, Expedition 28 flight engineer, inspects a new growth experiment on the BIO-5 Rasteniya-2 (Plants-2) payload with its LADA-01 greenhouse in the Zvezda service module of the International Space Station. (NASA)

When multidisciplinary science is brought into this picture, you can envision not only growing food aboard station, but processing those plants into biofuel and then testing its combustion capabilities. The context evolves into a larger study of in-orbit biofuel suitability. In fact, just because these resources are all available on station, researchers can propose new multidisciplinary studies to spur on scientific innovation.   

A burning heptane droplet during the FLEX investigation on the International Space Station. (NASA)

Another sign of the multidisciplinary research potential on station is the transformation of the American Society for Gravitational and Space Biology (ASGSB) into the American Society for Gravitational and Space Research (ASGSR). At the first ever ASGSR Annual meeting, held in December in New Orleans, researchers and students from a wide range of physical and biological sciences came together to discuss the possibilities and challenges of reduced gravity studies. The opportunity was an enlightening one for scientists in previously separated disciplines to come together and share information on their research programs, including many of the active areas of research done aboard station.

With collaborative efforts like these, the multidisciplinary research potential of the International Spaces Station is already being tapped. It will be exciting to see what discoveries will result from our orbiting, scientific melting pot in the years to come.

Kirt Costello completed a Ph.D. in Space Physics and Astronomy in 1998. While at Rice University, Costello worked on a magnetospheric forecast model used to predict the magnetic field response at the Earth’s surface based on upstream solar wind data. The model was used as a primary forecast model in this field at the Space Environment Center in Boulder, Colo., from 1997-2011. Since 2000, Costello has worked at NASA’s Johnson Space Center as a Thermal and Electrical Power Crew training instructor, as an International Space Station Training Lead, and as a group lead in the Mission Operations Directorate Operations Division. Kirt is now the Assistant International Space Station Program Scientist for National Research. In this position he works with the ISS Program Scientist to advise the ISS Program Manager on the objectives and priorities of science being prepared to fly to the space station.

Texas Talks Space

In today’s A Lab Aloft, Jessica Nimon, research communications managing editor for NASA’s International Space Station Program Science Office, talks about the impact of interacting with the public during Space Week 2013 in Austin, Texas.

Texas hosts Space Day at the Capitol in Austin every other year as part of Space Week. This year’s theme was “Human Exploration: the Journey Continues.” This was my second time representing the International Space Station Program Science Office to the students, members of the public and legislative staff who attended. I enjoy participating in such events because not only I can share the latest space station research and technology news, but it also gives me a chance to gauge perceptions from the audience I communicate with in my role as a writer and editor at NASA.

Keeping the exploration theme in mind, NASA’s International Space Station Program research and technology display shared a space with the agency's Commercial Crew Program and Orion vehicle displays. Joining these exhibits in the lower level of the Capitol building’s rotunda were representatives from various commercial space companies, including SpaceX and Blue Origin. The in-the-round exhibit placement seemed symbolic of the partnerships taking place with NASA to continue and expand human space exploration.

Chelsey Bussey, International Space Station Program Science Office research scientist, answers a student’s questions during Space Day at the Capitol 2013 in Austin, Texas. (NASA/James Blair)

My colleagues, Scientific Communications Analyst Amelia Rai and Research Scientist Chelsey Bussey, helped tell the story of the amazing research, technology and educational opportunities and developments from our orbiting laboratory. We shared how the space station is a resource that goes beyond space exploration goals, reaching out to cross boundaries in areas of healthcare, pharmaceutical advancements and industry spinoffs. Some of my personal favorites to highlight include NeuroArm, a lifesaving robotic instrument for brain surgery developed using technology from the space station’s Canadarm, and advances made in vaccine development.

The inspiration shared at such events has the potential to touch not only the 3rd to 8th grade students targeted by Space Day, but also to inspire the imagination of new users with research goals for microgravity research. While speaking with the people visiting our exhibit, at least one scientist expressed interest in how he could use the space station as a platform for his research.

Amelia Rai, NASA scientific communications analyst, shares International Space Station research and technology facts with a visitor to Space Day at the Capitol 2013 in Austin, Texas. (NASA/Jessica Nimon)

One of the more frequent questions we received during the event had to do with NASA’s collaborative efforts with private businesses. Having our industry partners right next to us in the rotunda provided a great opportunity to share the way NASA does business. Visitors were surprised and excited to hear that NASA is working together with private companies to provide avenues for future exploration, as well as resupply and experiment sample return from the International Space Station.

Space Day followed on the heels of South by Southwest (SXSW), a multiday conference and festival highlighting music, film and technology, which also had a space-themed focus this year. Excitement for exploration was still abuzz all over Austin. Although we didn't attend SXSW, Amelia, Chelsey and I did have our own follow-up activity by attending an Amateur Radio on the International Space Station (ARISS) event on March 20 at the Ann Richards School for Young Women Leaders in Austin. These students, who were not able to visit the Capitol for Space Day, were excited to have a more up close, personal connection with the space station.

Canadian Space Agency astronaut Chris Hadfield conducts an Amateur Radio on the International Space Station session in the Zvezda Service Module. (NASA)

Using a ham radio contact, which lasts for about 10 minutes, the 540 middle and high school girls were able to listen as their peers asked space-related questions directly to space station Commander Chris Hadfield, who answered from aboard the orbiting laboratory. The audience was so attentive you could hear a pin drop while Hadfield spoke!

Ana H. from the Ann Richards School for Young Women Leaders in Austin, Texas, asks a question for Commander Chris Hadfield to answer during an Amateur Radio on the International Space Station connection.(Catherine Serra-Fuentes)

Project Specialist Monica Martinez organized the ARISS event for the school and commented on the impact such an opportunity has on these young women. “The ARISS contact was an experience that truly wowed our entire student body, faculty and administrative team. The girls thought it was one of the best events of this entire school year and loved talking to Commander Hadfield. They were also so ecstatic to see that he had tweeted about our school right after the contact. Our students were inspired by his words and the overall experience.”

Students at the Ann Richards School for Young Women Leaders in Austin, Texas, pose with NASA International Space Station Program Science Office representatives Jessica Nimon (fourth from left, back row), Chelsey Bussey (fifth from left, back row) and Amelia Rai (sixth from left, back row). (Catherine Serra-Fuentes)

The event was followed by a short space station presentation by Amelia, who shared space station facts and talked about some of the benefits for humanity that have already derived from related research and technology. Amelia’s talk was followed by a short question and answer session where the students’ interest in space-related topics and careers was evident, showing a bright future for human endeavors with space research and exploration.

Jessica Nimon, International Space Station Program Science Office research communications managing editor. (NASA)

Jessica Nimon has a background in the aerospace industry as a technical writer and now works with the International Space Station Program Science Office as the Research Communications Managing Editor. Jessica coordinates and composes Web features, blog entries and manages the @ISS_Research Twitter feed to share space station research and technology news with the public. She has a master’s degree in English from the University of Dallas.

The International Space Station Benefits for Humanity

The International Space Station Benefits for Humanity publication and associated website are part of the communications tools NASA uses to share benefits from space station research with humanity. (NASA)

The other thing to consider is that the International Space Station took a significant investment, and, much like the investments made in science in other areas, our public doesn’t understand how it helps their daily lives. If you ask people how the National Science Foundation helps their daily life, they can’t tell you. It’s the same if you ask about the space station; most can’t tell you how they benefit from our research. As scientists, we all have this same communication problem. With the space station, we’re trying to help connect the dots between the research we’re doing and how this can help make people’s lives better.

There are challenges to this. It takes time for those applications to develop; yet powerful applications have been made: cleaning the air in a daycare so kids aren’t as likely to transfer illness and research on astronaut bone loss are just two examples. The results from our bone loss studies are surprising researchers on Earth. There’s a lot of synergy, and there are some things we can study better on the space station in a microgravity environment. The results from space coupled with those from experiments on Earth benefit humanity in many ways.

It’s up to us, the scientists, to continue to challenge ourselves to share this work with the public in new and dynamic ways, to communicate the importance of this research and its outcomes. We can’t promise the application of a specific result, but we can promise our work will help our nation stay on the competitive edge. We shouldn’t oversell—but we also shouldn’t sell our science short.

Julie A. Robinson, Ph.D.

International Space Station Program Scientist

Tuning In Scientists so the Public Will Not Tune Out

In today’s A Lab Aloft, International Space Station Program Scientist Julie Robinson shares how scientists can better share research with the public.

As scientists we are trained to “sell” our research to other scientists. We submit our proposals to a peer review panel, our papers to peer reviewers and we present those papers to each other at conferences. We write and speak for and to ourselves. Unfortunately, learning how to communicate with other scientists doesn’t necessarily prepare you to share your science with broader audiences like the public. Science often gets criticized for being too esoteric or not connected enough to taxpayers that fund the research. I think this is because the scientists have not learned how to communicate with those audiences.

It is worth the effort to take the time to become a better general communicator. I find that scientists who are good at speaking with non-scientists are also skilled at communicating with scientists in disciplines other than their own. This is because they are able to focus on more than their own discipline and think about the connections between the things everybody knows. Making the effort to communicate can actually make you a more innovative scientist!

International Space Station Program Scientist Julie Robinson communicating the impacts of microgravity research at the 2012 ISS Symposium. (ESA)

Challenging yourself to think about what you’ve done and explain it to your grandmother or to your neighbor can be a powerful intellectual driver. If you can do that, and explain why the research matters, the conversation transitions from a lecture to an inspirational experience. It helps you become a better scientist when you make that connection.

One challenge we have when we attempt to communicate science to the public is the funny view that people have about scientists. I think most people picture Albert Einstein, the mad scientist stereotype or, heaven forbid, the crazy female scientist. Real scientists are innovative and not nearly as dramatic or as inscrutable as in the movies. Because of the stereotypes, people expect you to be hard to understand. The audience may dismiss the information, saying they don’t get that “science stuff” and just stop listening.

Albert Einstein, 1935

Thankfully there are some great models out there on how to reach the public and how to get science information to them. For instance, NPR Science Friday covers various science disciplines accurately, and yet it’s understandable. There are some great science media outlets that are communicating research in inspiring ways. Nature magazine has great, publically accessible, weekly science reporting. Smithsonian and Discovery also connect with people that are interested in science.

Not only do we need to get people interested in what we’re doing and why it matters to us, but we also need to articulate why our work should matter to them. Making that connection is often hard for scientists. During our development as scientists our colleagues have trained us—sometimes painfully—not to overstate our conclusions. We are taught to say things with the caveat “we don’t know for sure” or “we might need to do more research to find out.” This automatically makes what we say boring, and it reduces the impact. It also seems so self-serving to a non-scientist because they get the impression that our main purpose is to justify more research.

Unfortunately, we often add these caveats unnecessarily by instinct. We don’t want anyone to accuse us of saying anything beyond our data. There’s a tension between explaining things in a dynamic way and overstating the case for findings or benefits of a study.

Thumbing through an airline magazine the other day, I saw several ads for universities that read, “We’re making breakthroughs for your health.” They’re happy and at ease making those sorts of statements; we at NASA would not be comfortable stating that without a lot of proof in the fine print. We have a lot of watchdogs that are ready to question our claims, even if what we are trying to do is be good communicators about our accomplishments.

Smart Use of Science Space in Space

In today’s A Lab Aloft, guest blogger Liz Warren, Ph.D., explains the flexibility in science capability on the International Space Station, thanks to the modular design of the research racks aboard the orbiting laboratory.

People are often shocked when they learn that the International Space Station is as large as a football field. They are also surprised to know that the interior volume is 32,333 cubic feet; that’s about the size of a five-bedroom house. Even though that is a very large volume, it pays to use ‘space’ smartly in space.

In order to be most efficient with the interior volume of the space station, the orbiting laboratory contains modular science facilities, usable by multiple investigators and experiment types. In fact, some of the facilities aboard the station are engineered for easy modification to meet the needs of different users. These ‘shared’ facilities enable efficient research utilization time aboard the station. Making facilities modular also allows for upgrades so that the space station stays on the cutting edge of science.

NASA astronaut Greg Chamitoff, Expedition 17 flight engineer, works with an experiment within the Microgravity Sciences Glovebox. (NASA)

Inside the Destiny, Kibo and Columbus laboratories, the walls, ceilings and floors are lined with science “rack” facilities. These racks, each similar in size to a big refrigerator (about 79.3 in. high, 41.3 in. wide, and 33.8 in. deep), are curved in the rear so that they fit almost flush against the inside surface of the cylindrical space station laboratory modules. The racks themselves are modular for easy relocation within the station as needed.

Some racks are built for housing several small-sized investigations. These EXPRESS racks provide power, air and water cooling, data and exhaust, command and control for up to a dozen different investigations. EXPRESS stands for Expedite the Processing of Experiments to the Space Station, reflecting the fact that this system was developed specifically to maximize the space station's research capabilities.

NASA astronaut Greg Chamitoff, Expedition 17 flight engineer, works in the Kibo laboratory to move an EXPRESS rack during a relocation task. (NASA)

Other racks are specialized for specific disciplines such as combustion, fluids, materials, human research and Earth observation. There is also a glovebox that is suitable for handling and containing hazardous materials and several freezers to preserve science samples.

As a National Laboratory, the station science facilities built by NASA are available on a time-shared basis to other U.S. government agencies and private entities, such as commercial companies and universities, to pursue their own mission-driven research and applications. Shared use of international capabilities can also be arranged between NASA and the International Space Station partner agencies. Scientists that find they need a facility for their experiment that does not currently exist in orbit can work with their sponsoring organization to develop new hardware, which NASA will launch without cost to the scientist.

To highlight the capabilities of some of the space station’s science racks, Space Center Houston, the visitor center at NASA's Johnson Space Center, enlisted help from the International Space Station Program and Space City Films of Houston to produce a unique video display for an updated space station exhibit. The exhibit is designed to educate and excite visitors about the accomplishments and importance the station plays in our continued human presence in space and the research conducted there.

The International Space Station has a variety of multidisciplinary laboratory facilities and equipment available for scientists to use. The video here highlights the capabilities of select facilities. (NASA/Space Center Houston)

The video display is actually a large wall, onto which the video projects from the back for a vibrant, life-sized, interactive experience!

I assisted in the production of this video for visitors to Space Center Houston to enjoy, providing images, video and scientific content. Viewing the finished product for the first time on a recent visit was fulfilling, but I know there is more work to be done to communicate the value of space station research.

The International Space Station is a premier, world-class laboratory in low-Earth orbit that promises to yield insights, science and technologies, the likes of which we have only begun to comprehend. With the capabilities of our research racks and facilities, investigators can use microgravity to unlock fundamentals of combustion, fluids, physiology and more to improve life on Earth in addition to supporting future space exploration.

Liz Warren, Ph.D., communications coordinator for the International Space Station Program Science Office. (NASA)

“Albert Einstein” Delivers Gear to Expedition 36 Crew

Europe’s Automated Transfer Vehicle-4 (ATV-4) automatically docked Saturday at 10:07 a.m. EDT to the aft-end port of the Zvezda service module. The ATV-4, nicknamed the “Albert Einstein,” launched June 5 atop an Ariane 5 rocket delivering cargo, experiment hardware and supplies. Also aboard the ATV-4 are propellant, water and oxygen and air. 

The ATV-4, which launched from a European Space Agency (ESA) launch pad in Kourou, French Guiana, is ESA’s heaviest spacecraft ever. The 13-ton spacecraft delivered 5,465 pounds of dry cargo, experiment hardware and supplies. It is also carrying 1,896 pounds of propellant for transfer to the Zvezda service module, 5,688 pounds of propellant for reboost and debris avoidance maneuver capability, 1,257 pounds of water and 220 pounds of oxygen and air. 

Zvezda’s docking port was opened four days earlier when a trash-filled ISS Progress 51 resupply craft undocked. As it was backing away, external cameras on the Progress took photographs of the port for ground controllers to inspect for possible damage on sensors that could have prevented Saturday’s ATV-4 docking. 

When the Progress 51 launched in April a Kurs antenna failed to deploy after it reached orbit. Controllers were concerned this could have potentially damaged sensors when it docked to the Zvezda port. The Russian cargo craft is now orbiting Earth for engineering tests before re-entering Earth’s atmosphere Tuesday for a fiery disposal over the Pacific Ocean. 

The “Albert Einstein” is scheduled to end its mission at the International Space Station in late October. The trash-filled vehicle will re-enter the Earth’s atmosphere and burn up over the Pacific Ocean. While there, the ATV-4 will provide extra storage space and more habitable volume for the crew.