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The Making of Our Alien Earth: The Undersea Volcanoes of Santorini, Greece


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The Making of Our Alien Earth: The Undersea Volcanoes of Santorini, Greece

On the deck of a ship, a large A-frame style crane is lifting a submersible research vehicle into the air, as crew members hold taglines connecting to the vehicle, preparing to deploy it into the ocean.
The expedition team and crew prepare to deploy Nereid Under Ice (NUI) into the sea.

The following expedition marks the third installment of NASA Astrobiology’s fieldwork series, the newly rebranded Our Alien Earth, streaming on NASA+. Check out all three episodes following teams of astrobiologists from the lava fields of Holuhraun, Iceland, to the Isua Greenstone Belt of Greenland, and finally, the undersea volcanoes of Santorini, Greece. And stay tuned for the lava tubes of Mauna Loa, Hawaii in 2025.

THE VOYAGE BEGINS

My career at NASA has always felt like a mad scientist’s concoction of equal parts hard work, perseverance, absurd luck, and happenstance. It was due to this mad blend that I suddenly found myself on the deck of a massive tanker ship in the middle of the Mediterranean sea, watching a team of windburnt scientists, engineers, and sailors through my camera lens as they wrestled with a 5,000lb submersible hanging in the air.

On the deck of a ship, a large A-frame style crane is lifting a submersible research vehicle into the air, as crew members hold taglines connecting to the vehicle, preparing to deploy it into the ocean.
The expedition team and crew prepare to deploy Nereid Under Ice (NUI) into the sea.

“Let it out, Molly, slack off a little bit…” shouts deck boss Mario Fernandez, as he coordinates the dozen people maneuvering the vehicle. It’s a delicate dance as the hybrid remotely operated vehicle (ROV), Nereid Under Ice (NUI), is hoisted off the ship and deployed into the sea. “Tagline slips, line breaks… you’ve got a 5,000lb wrecking ball,” recounts Mario in an interview later that day.

How did I get here?

A few years ago I found myself roaming the poster halls of the Astrobiology Science Conference in Bellevue, Washington, struggling to decipher the jargon of a dozen disciplines doing their best to share their discoveries; phrases like lipid biomarkers, anaerobic biospheres, and macromolecular emergence floated past me as I walked. I felt like a Peanuts character listening to an adult speak.

Until I stumbled upon a poster by Dr. Richard Camilli entitled, Risk-Aware Adaptive Sampling for the Search for Life in Ocean Worlds. I was quickly enthralled in a whirlwind of icy moons, fleets of deep sea submersible vehicles, and life at sea.

A middle-aged white man with a grayish-blonde beard smiles and stands on the deck of a ship, sun setting behind him. He is wearing a hat with a sailboat on it, and a gray NASA shirt.
Dr. Richard Camilli, principal investigator of a research expedition to explore undersea volcanoes off the coast of Santorini.

“Are you free in November?”

“Absolutely,” I replied without checking a single calendar.

Five months and three flights later, I arrived at the port of Lavrio, Greece, as Dr. Camilli and his team were unloading their suite of vehicles from gigantic shipping crates onto the even more massive research vessel. I stocked up on motion sickness tablets, said a silent farewell to land, and boarded the ship destined for the undersea Kolumbo volcano.

Greece is a great place to study geology, because it’s a kind of supermarket of natural disasters.

Dr. Paraskevi NomikoU

Dr. Paraskevi NomikoU

University of Athens

A large research ship in the lower right corner is making its way towards the horizon, as the sun sets casting rose-colored light across clouds in the sky. On the left of the image, an island is in the distance.
The expedition sets out to sea as the sun sets in the distance.

LIFE AT SEA

Documenting astrobiology fieldwork has taken me to some pretty remote and rough places. Sleeping in wooden shacks in Iceland without running water and electricity, or bundled up in a zero-degree sleeping bag in a tent while being buffeted by gale force winds in the wilderness of Greenland. But life at sea? Life at sea is GOOD.

I was fortunate to have a personal cabin all to myself: a set of bunk beds, a small bathroom with a shower, and a small desk with plenty of outlets for charging my gear. I would also be remiss if I didn’t mention the mess hall. Aside from a freshly rotated menu of three hot meals a day, it was open 24/7 with a constant lineup of snacks to keep bellies full and morale high. This was luxury fieldwork. The ability to live, work, and socialize all in the same place would make this trip special in its own right, and allowed me to really get to know the team and capture every angle of this incredibly complex and multi-faceted expedition.

The ship in the port of Lavrio, Greece. The team will spend two full days docked here while preparing for the voyage ahead.
NASA Astrobiology/Mike Toillion

SEARCHING FOR LIFE ON OCEAN WORLDS

“The goal of this program is cooperative exploration with under-actuated vehicles in hazardous environments,” explains Dr. Camilli as we stand on the bow of the ship, the sun beginning to set in the distance. “These vehicles work cooperatively in order to explore areas that are potentially too dangerous or too far away for humans to go.”

This is the problem at hand with exploring icy ocean worlds like Jupiter’s moon, Europa. The tremendous distance between Earth and Europa means we will barely be able to communicate and control vehicles that we send to the surface, and will face even more difficulty once those vehicles dive below the ice. This makes Earth’s ocean a perfect testbed for developing autonomous, intelligent robotic explorers.

“I’ve always been struck at how parallel ocean exploration and space exploration is,” says Brian Williams, professor from the Computer Science and Artificial Intelligence Laboratory at MIT. “Once you go through the surface, you can’t communicate. So, somehow you have to embody the key insights of a scientist, to be able to look and see: is that evidence of life?”

An underwater view of a torpedo-shaped research vehicle with wings, called a glider, moves just under the surface of the ocean.
One of the gliders, an autonomous scouting vehicle equipped with multple sensors to map the seafloor and report back to the ship.
NASA Astrobiology/Mike Toillion

MEET THE FLEET

Exploring anywhere in space begins with a few simple steps: first, you need to get a general map of the area, which is typically done by deploying orbiters around a celestial body. The next step is to get a closer look, by launching lander and rover missions to the surface. Finally, in order to understand the location best, you need to bring samples back to Earth to study in greater detail.

“So you can think of what we’re doing here as being very parallel, that the ship is like the orbiter and is giving us a broad view of the Kolumbo volcano, right? Once we do that map, then we need to be able to explore interesting places to collect samples. So, the gliders are navigating around places that look promising from what the ship told us. And then, it looks to identify places where we might want to send NUI. NUI is very capable in terms of doing the samples, but it can’t move around nearly as much. And so, we finally put NUI at the places where the gliders thought that they were interesting.”

The expedition team works into the night preparing NUI for its upcoming mission to the Kolumbo volcano.
NASA Astrobiology/Mike Toillion

THE SCIENTIST’S ROBOTIC APPRENTICE

As the espresso machine in the mess hall whirred away pouring out a much needed shot of caffeine, I sat with Eric Timmons, one of the expedition’s computer science engineers. Eric wears a few hats on the ship, but today we are discussing automated mission planning, the first step to true autonomy in robotic exploration.

“In any sort of scientific mission, you’re going to have a list of goals, each with their own set of steps, and a limited amount of time to achieve them. And so, Kirk works on automating that.” Kirk is the nickname of one of the many algorithms involved in the team’s automated mission planning. It’s joined by other algorithms, all named after Star Trek characters, collectively known as Enterprise, each responsible for different aspects of planning a mission and actively adapting to new mission parameters.

Dr. Richard Camilli explains further: “Basically, we have scientists onboard the ship that are feeding policies to these automated planners. [The planners] then take those policies plus historical information, the oceanographic context, and new information being transmitted by the vehicles here and now; they take all that information, and combine it to construct a mission that gets to the scientific deliverables, while also being safe.”

These are areas that humans aren’t designed to go to. I guess the best analogy would be like hang gliding in Midtown Manhattan at night.

Dr. richard camilli

Dr. richard camilli

Woods Hole Oceanographic Institution

OK, let’s recap the story so far: the ship’s sonar and other instruments create a general map of the Kolumbo volcano. That information, along with data from previous missions, is fed to Enterprise’s team of algorithms, which generates a mission for the gliders. The gliders are deployed, and using their sensors, provide higher-fidelity data about the area and transmit that knowledge back to the ship. The automated mission planners take in this new data, and revise their mission plan, ranking potential sites of scientific interest, which are then passed onto NUI, which will conduct its own mission to explore these sites, and potentially sample anything of interest.

DIVE, DIVE, DIVE

After a few days on the ship, the routine of donning my steel-toed boots and hard hat when walking around the deck has started to become second nature. My drone skills have greatly improved, as the magnetic field produced by the ship and its instruments forced me to take-off and land manually, carefully guiding the drone in and around the many hazards of the vessel. This morning, however, I’ve been invited to step off the ship for the first time to get a first-hand look at deploying the gliders. Angelos Mallios from the glider team leads me down into the bowels of the ship to the lower decks, as we arrive at a door that opens to the outside of the ship, waves lapping about six feet below. A zodiac pulls up to the door and we descend down a ladder into the small boat.

Riding in the zodiac with the glider team, led by Angelos Mallios.
NASA Astrobiology/Mike Toillion

Meanwhile, the rest of the glider team is on the main deck of the ship, lifting the gliders with a large, motorized crane, and lowering them onto the surface of the water. The zodiac team approached to detach the glider and safely set it out into the sea, while I dipped a monopod-mounted action camera in and out of the water to capture the process. Unbeknownst to me at the time, this would become some of my favorite footage of the trip, sunlight dancing off the surface of the waves, while the gliders floated and dove beneath.

Angelos’ radio began to chatter. Eric Timmons was onboard the ship ready to command the gliders to begin their mission plan assigned by Enterprise. A moment passed and the yellow fin of the glider dipped below the water’s surface and disappeared.

A hard-hat wearing scientist leans out of a zodiac boat to gently deploy an autonomous torpedo-shaped vehicle with wings, called a glider, into the ocean off the coast of Santorini, Greece.
Angelos Mallios from the Woods Hole Oceanographic Institution, leans out of a zodiac to deploy a glider, an autonomous vehicle and the forward scout for the expedition.

NUI VERSUS THE VOLCANO

The following day, it was time to see the star of the show in action; the expedition team was ready to deploy the aforementioned 5,000lb wrecking ball, NUI. The gliders had been exploring the surrounding area day and night, using their suite of sensors to detect areas of scientific interest. Since this mission is about searching for life, the gliders know that warmer areas could indicate hydrothermal vent activity; a literal hotspot for life in the deep ocean. Kirk, along with the science planner algorithm, Spock, determined a list of possible candidates that fit that exact description.

Four members of the expedition team wearing hard hats, lean against the wall of the ship's deck watching the deployment of the ROV Nereid Under Ice.

“There’s always a bit of tension in the operations, where, do you go strike out in an area that is unstudied and potentially come back with nothing? Or do you go to a site that you know and try to understand it a little bit more, that kind of incremental advance?” Dr. Camilli pauses to take a quick swig of sparkling water after a long day of diving operations, as he recounts a moment in the control room earlier that day. All the scientists onboard this expedition are extremely skilled and knowledgable, and this mission is asking them to put aside their instincts, and follow the suggestions of computer algorithms; a hard pill to swallow for some.

Underwater footage from Nereid Under Ice, showing a thriving community on the sea floor, including a never before seen species.
NASA Astrobiology/Mike Toillion and WHOI

“We stuck with the Spock program, and it paid great dividends. And all of the scientists were amazed at what they saw. The first site that we went to was spectacular. The second site we went to was spectacular. Each of the five sites that it identified as interesting were interesting, and they were each interesting in a different way; totally different environments.”

Interesting, in this case, was quite the understatement. As the expedition team and I crowded into the ship’s control room to look at the camera feeds transmitted by NUI, now fully deployed to the seafloor, audible gasps erupted from multiple people. Bubbles filled the monitor as live fumaroles, active vents from the volcano, were pouring out heat and chemical-rich fluid into the water. Thick, microbial mats covered the surrounding rock, and multicellular lifeforms dotted the landscape. The expedition team had found a live hydrothermal vent, and life thriving around it.

SOUVENIRS FROM THE OCEAN FLOOR

“I’ve never seen anything like that before,” recalls Casey Machado, expedition lead and the main pilot for Nereid Under Ice (NUI). Casey is sitting in an office chair surrounded by glowing monitors, a joystick in their left hand, and a gaming controller in their right. Since NUI is a hybrid ROV, it can be controlled manually from the ship by remote, or receive autonomous instructions from the Enterprise mission planners. Today, the team plans on manually controlling NUI to retrieve samples from the first site of interest.

NUI is a strange looking vehicle. Only a small section of its body is watertight, where many of its critical components are housed. The remainder is fairly open, and upon arriving at the first site recommended by Spock, the front of the ROV opens up its front double doors to reveal a multi-jointed manipulator arm, stereo camera set, and other instruments. I’m instantly reminded of the space shuttle mission to repair the Hubble Space Telescope, which had a similar mechanism.

Casey Machado, pilot of the hybrid ROV Nereid Under Ice (NUI), pilots the manipulator arm to take a rock sample.
NASA Astrobiology/Mike Toillion

Casey deftly maneuvers each joint of the arm to approach a rock covered in microbial mats. The end of NUI’s arm is equipped with two sampling instruments: a claw-like grabbing mechanism and a vacuum-like hose called the “slurp gun”. The end of the arm twists and turns as Machado aligns it with the rock, eventually opening and closing it around the target. With a gentle pull, the rock comes loose, and with a few more careful manipulations places it delicately into NUI’s sample cache. I offer a high-five, which Casey nonchalantly returns like the whole task was nothing.

TEACHING A ROBOT TO FISH

At this point, the expedition team has collected dozens of samples and achieved multiple engineering milestones, enough to fill years’ worth of scientific papers, but they are far from finished. A true mission to an ocean world will have to be pilotless, as Dr. Gideon Billings from MIT explains: “They need to operate without any human intervention. They need to be able to understand the scene through perception and then make a decision about how they want to manipulate to take a sample or achieve a task.”

Gideon sits in the control room to the left of the piloting station, working alongside Casey as they prepare to demonstrate NUI’s automated sampling capabilities. His laptop screen shows a live 3D-model of the craft, its doors open, arm extended. Projected around the craft is a 3D reconstruction, or point cloud, of the seafloor created from the stereo camera pair mounted inside the vehicle. Similarly to how our brains take the two visual feeds from both of our eyes to see three-dimensionally, a stereo camera pair uses two cameras to achieve the same effect. By clicking on the model and moving its position in the software, NUI performs the same action thousands of meters under the ocean.

Two men face away from the camera looking at a computer monitor, as a 3D model of a submersible vehicle is displayed.
Shared autonomy between the automated sampling team and the ROV Nereid Under Ice.

“That is shared autonomy, where you could imagine a pilot indicating a desired pose

for the arm to move to, but then a planner taking over and coming up with the path that the arm should move to reach that goal. And then, the pilot just essentially hitting a button and the arm following that path.”

Over the course of multiple dives, Gideon tested various sampling techniques, directing the manipulator arm to use its claw-like device to grab different tools and perform a variety of tasks. “We were able to project the point cloud into that scene, and then command the arm to grab a push core and move it into a location within that 3D reconstruction. We verified that that location matched up. That showed the viability of an autonomous system.” This seemingly small victory is a huge step towards exploring planets beyond Earth. Since this expedition, the engineering team has not only improved this shared autonomy system, but has also implemented a natural language interface, allowing a user to use their normal speaking voice to give commands to the ROV, further blurring the lines between reality and science fiction.

The sun rises over the Mediterranean Sea on the final day of the research cruise.
NASA Astrobiology/Mike Toillion

SOMEWHERE BEYOND THE SEA

I cannot help but envy the life of those who chose to make the ocean their place of work. The time I’ve spent with oceanographers has me questioning all my life choices; clearly they knew something I didn’t.

Watching the sunrise every morning, peering through the murky depths of the deep sea, unlocking the secrets of Earth’s final frontier. All in a day’s work for Dr. Richard Camilli and his team of intrepid explorers.

Watch Our Alien Earth and The Undersea Volcanoes of Santorini, Greece on NASA+ and follow the full story of this incredible expedition.

An ultrawide panorama of a sunrise at sea. The foreground shows a still ocean with minimal waves, receding to a small island on the horizon, with bright yellow and orange clouds against a blue sky.
Panorama of a sunrise at sea.

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With help of these “gravity assists,” Europa Clipper will achieve the velocity needed to reach Jupiter in April 2030.Credit: NASA/Kim Shiflett NASA newest class of astronauts, selected in 2021, graduate during a ceremony on March 5, 2024, at the at the agency’s Johnson Space Center in Houston.Credit: NASA NASA and Boeing welcomed Starliner back to Earth following the uncrewed spacecraft’s successful landing at 10:01 p.m. MDT Sept. 6, 2024, at the White Sands Space Harbor in New Mexico. Credit: NASA NASA’s X-59 quiet supersonic research aircraft sits on the apron outside Lockheed Martin’s Skunk Works facility at dawn in Palmdale, California. The X-59 is the centerpiece of NASA’s Quesst mission, which seeks to address one of the primary challenges to supersonic flight over land by making sonic booms quieter.Credit: Lockheed Martin Skunk Works Five NASA astronauts wore eye-protecting specs in anticipation of viewing the solar eclipse from the International Space Station’s cupola. The Expedition 70 crewmates had three opportunities on April 8 to view the Moon’s shadow as it tracked across the Earth surface during the eclipse.Credit: NASA/Loral O’Hara This enhanced color view of NASA’s Ingenuity Mars Helicopter was generated using data collected by the Mastcam-Z instrument aboard the agency’s Perseverance Mars rover on Aug. 2, 2023, the 871st Martian day, or sol, of the mission. The image was taken a day before the rotorcraft’s 54th flight.Credit: NASA The CHAPEA crew egress from their simulated Mars mission July 6, 2024, at NASA’s Johnson Space Center in Houston. From left: Kelly Haston, Nathan Jones, Anca Selariu, and Ross Brockwell.Credit: NASA/Josh Valcarcel An artist’s concept of NASA’s Advanced Composite Solar Sail System spacecraft in orbit.Credit: NASA/Aero Animation/Ben Schweighart Office of STEM Engagement Deputy Associate Administrator Kris Brown, right, and U.S. Department of Education Deputy Secretary Cindy Marten, left, watch as a student operates a robot during a STEM event to kickoff the 21st Century Community Learning Centers NASA and U.S. Department of Education partnership, Monday, Sept. 23, 2024, at Wheatley Education Campus in Washington. Students engaged in NASA hands-on activities and an engineering design challenge. Credit: NASA/Aubrey Gemignani On Feb. 22, 2024, Intuitive Machines’ Odysseus lunar lander captures a wide field of view image of Schomberger crater on the Moon approximately 125 miles (200 km) uprange from the intended landing site, at approximately 6 miles (10 km) altitude.Credit: Intuitive Machines NASA’s Artemis II crew members from left to right CSA (Canadian Space Agency) astronaut Jeremy Hansen, and NASA astronauts Christina Koch, Victor Glover, and Reid Wiseman walk in the well deck of the USS San Diego during Underway Recovery Test 11 (URT-11), as NASA’s Exploration Ground System’s Landing and Recovery team and partners from the Department of Defense aboard the ship practice recovery procedures using the Crew Module Test Article off the coast of San Diego, California on Tuesday, Feb. 27, 2024. URT-11 is the eleventh in a series of Artemis recovery tests, and the first time NASA and its partners put their Artemis II recovery procedures to the test with the astronauts.Credit: NASA/Isaac Watson Observing, Learning About Earth
      NASA collects data about our home planet from space and on land, helping understand how our climate on Earth is changing. Some of the agency’s key accomplishments in Earth science this year include:
      After launching into space in February, NASA’s PACE (Plankton, Aerosol, Cloud, ocean Ecosystem) satellite mission is successfully transmitting first-of-their-kind measurements of ocean health, air quality, and the effects of a changing climate. Using the agency’s TEMPO (Tropospheric Emissions: Monitoring of Pollution) instrument, NASA made available new near-real time data providing air pollution observations at unprecedented resolutions – down to the scale of individual neighborhoods. Launched in May and June, NASA’s PREFIRE (Polar Radiant Energy in the Far-Infrared Experiment) CubeSats started collecting data on the amount of heat in the form of far-infrared radiation that the Arctic and Antarctic environments emit to space. NASA rolled out the Disaster Response Coordination System, a new resource that delivers up-to-date information on fires, earthquakes, landslides, floods, tornadoes, hurricanes, and other extreme events to emergency managers. The agency partnered with the Smithsonian National Museum of Natural History to open the Earth Information Center exhibit. Exploring Our Solar System, Universe
      NASA’s Europa Clipper embarked Oct. 14 on its long voyage to Jupiter, where it will investigate Europa, a moon with an enormous subsurface ocean that may have conditions to support life. NASA collaborated with multiple partners on content and social media related to the launch, including engagements with the National Hockey League, U.S. Figure Skating, 7-Eleven, e.l.f., Girl Scouts, Crayola, Library of Congress, and others. NASA’s 2024 space exploration milestones also include: 
      NASA’s groundbreaking James Webb Space Telescope marked more than two years in space, transforming our view of the universe as designed, by studying the most distant galaxies ever observed, while raising exciting new questions about the atmospheres of planets outside our solar system. As part of an asteroid sample exchange, NASA officially transferred to JAXA (Japan Aerospace Exploration Agency) a portion of the asteroid Bennu sample collected by the agency’s OSIRIS-Rex (Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer) mission in a ceremony on Aug. 22. After surviving multiple challenges this year, NASA’s Voyager mission continues to collect data on the furthest reaches of our Sun’s influences. NASA selected a new space telescope for development that will survey ultraviolet light across the entire sky, called UVEX (UltraViolet Explorer). This year, all remaining major components were delivered to NASA Goddard to begin the integration phase for the agency’s Nancy Grace Roman Space Telescope. NASA developed, tested, and launched the patch kit that astronauts will use to repair the agency’s NICER (Neutron star Interior Composition Explorer) telescope on the International Space Station. The agency continued preparing the SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) mission to launch by April 2025. To manage the maturation of technologies necessary to develop the Habitable Worlds Observatory telescope, NASA established a project office at NASA Goddard. NASA and partners declared that the Sun reached solar maximum in 2024, a period of heightened solar activity when space weather becomes more frequent. The Solar and Heliospheric Observatory, a joint mission between ESA (European Space Agency) and NASA, discovered its 5,000th comet in March. NASA’s Sounding Rocket Program provided low-cost access to space for scientific research, technology development, and educational missions. NASA launched 14 sounding rocket missions in 2024. Scientists announced findings from a sounding rocket launched in 2022 that confirmed the existence of a long-sought global electric field at Earth. The agency established a new class of astrophysics missions, called Astrophysics Probe Explorers, designed to fill a gap between NASA’s flagship and smaller-scale missions. Living, Conducting Research in Space
      In 2024, a total of 25 people lived and worked aboard the International Space Station, helping to complete science for the benefit of humanity, open access to space to more people, and support exploration to the Moon in preparation for Mars. A total of 14 spacecraft visited the microgravity laboratory in 2024, including eight commercial resupply missions from Northrop Grumman and SpaceX, as well as international partner missions, delivering more than 40,000 pounds of science investigations, tools, and critical supplies to the space station. NASA also helped safely return the uncrewed Boeing Starliner spacecraft to Earth, concluding a three-month flight test to the International Space Station. In addition:
      In March, NASA welcomed its newest class of Artemis Generation astronauts in a graduation ceremony. The agency also sought new astronaut candidates, and more 8,000 people applied. NASA astronaut Jasmin Moghbeli, ESA (European Space Agency) astronaut Andreas Mogensen, and JAXA (Japan Aerospace Exploration Agency) astronaut Satoshi Furukawa returned to Earth at the conclusion of NASA’s SpaceX Crew-7 mission aboard the International Space Station. The three crew members, along with Roscosmos cosmonaut Konstantin Borisov, splashed down in March off the coast of Pensacola, Florida, completing a six-and-a-half-month mission contributing to hundreds of experiments and technology demonstrations. In June, NASA astronauts Butch Wilmore and Suni Williams safely arrived at the space station aboard Boeing’s Starliner spacecraft following launch of their flight test. With Starliner’s arrival, it was the first time in station history three different spacecraft that carried crew to station were docked at the same time. Starliner returned uncrewed in September following a decision by NASA. Wilmore and Williams, now serving as part of the agency’s Crew-9 mission, will return to Earth in February 2025. NASA astronaut Don Pettit, accompanied by Roscosmos cosmonauts Alexey Ovchinin and Ivan Vagner, arrived at the orbital laboratory in September to begin a six-month mission. Completing a six-month research mission in September, NASA astronaut Tracy C. Dyson returned to Earth with Roscosmos cosmonauts Oleg Kononenko and Nikolai Chub aboard the Soyuz MS-25 spacecraft. NASA astronaut Nick Hague and Roscosmos cosmonaut Aleksandr Gorbunov launched on the agency’s SpaceX Crew-9 mission to the space station. Concluding a nearly eight-month science mission, NASA’s SpaceX Crew-8 mission safely returned to Earth, splashing down on Oct. 25, off the coast of Pensacola, Florida. NASA and Axiom Space successfully completed the third private astronaut mission to the space station in February, following an 18-day mission, where the crew conducted 30 experiments, public outreach, and commercial activities in microgravity. The agency announced SpaceX was selected to develop and deliver the U.S. Deorbit Vehicle, which will safely move the space station out of orbit and into a remote area of an ocean at the end of its operations. NASA and SpaceX monitored operations as the company’s Dragon spacecraft performed its first demonstration of reboost capabilities for the space station. NASA concluded the final mission of its Spacecraft Fire Safety Experiment, or Saffire, putting a blazing end to an eight-year series of investigations looking at  fire’s behavior in space. A robotic surgical tool aboard space station was successfully controlled remotely by surgeons on Earth. The Robotic Surgery Tech Demo tested the performance of a small robot to evaluate the effects of microgravity and time delays between space and ground. The first successful metal 3D print was conducted aboard the space station, depositing a small s-curve in liquified stainless steel for the Metal 3D Printer investigation to test additive manufacturing of small metal parts in microgravity for equipment maintenance on future long-duration missions. In 2024, 17 NASA Biological and Physical Science research payloads were delivered to the orbital laboratory, spanning quantum, plant biology, and physical sciences investigations. More than 825,000 photos of Earth were taken from the space station in 2024 so far, contributing to research tracking how our planet’s landscapes are changing over time. Expedition 71 produced more than 630,000 images, the most taken during a single mission. In total, more than 5.3 million photos have been taken from the space station, providing imagery for urban light studies, studies of lightning flashes, and 14 natural disaster events in 2024 alone. Imagining Future Flight
      NASA researchers worked to advance innovations that will transform U.S. aviation, furthering the Sustainable Flight National Partnership and other efforts to help the country reach net zero carbon emissions by 2050. NASA also unveiled its X-59 quiet supersonic aircraft, the centerpiece of its Quesst mission to make quiet overland supersonic flight a reality. NASA aeronautics initiatives also worked to bring air taxis, delivery drones, and other revolutionary technology closer to deployment to benefit the U.S. public and industry. Over the past year, the agency:
      Began testing the quiet supersonic X-59’s engine ahead of its first flight. Made further progress in research areas of Quesst mission, including ground recording station testing and advancement and structural tests on the aircraft. Publicly unveiled the X-59 in January, providing the first look at this unique aircraft. Tested a wind-tunnel model of the X-66, an experimental aircraft designed to reduce the carbon footprint. Began building the X-66 simulator that will allow pilots and engineers to run real-life scenarios in a safe environment. Funded new studies looking at the future of sustainable aircraft for the 2050 timeframe and beyond. Built a new simulator to study how passengers may experience air taxi rides. The results will help designers create new aircraft types with passenger comfort in mind. Developed a computer software tool called OVERFLOW to predict aircraft noise and aerodynamic performance. This tool is now being used by several air taxi manufacturers to test how propellers or wings perform. In collaboration with Sikorsky and DARPA (Defense Advanced Research Projects Agency), flew two helicopters autonomously using NASA-designed collision avoidance software. Designed and flew a camera pod with sensors to help advance computer vision for autonomous aviation. Launched a new science, technology, engineering, and mathematics kit focused on Advanced Air Mobility so students can learn more about air taxis and drones. Continued to reduce traffic and save fuel at major U.S. airports as part of NASA’s to work to improve air travel and make it more sustainable. Worked with partners to demonstrate a first-of-its-kind air traffic management concept for aircraft to safely operate at higher altitudes. Advanced Hybrid-Electric technologies with GE Aerospace under the Hybrid Thermally Efficient Core project. Conducted new ground and flight tests for the Electrified Powertrain Flight Demonstration project, which works to create hybrid electric powertrains for regional and single-aisle aircraft, alongside GE Aerospace and magniX. Collaborated with the Federal Aviation Administration and police and fire departments to strategize on integrating public safety drones into the national airspace. Launched a new science, technology, engineering, and mathematics kit focused on Advanced Air Mobility so students can learn more about air taxis and drones. Improving Life on Earth, in Space with Technology
      NASA develops essential technologies to drive exploration and the space economy. In 2024, NASA leveraged partnerships to advance technologies and test new capabilities to help the agency develop a sustainable presence on the lunar surface and beyond, while benefiting life on our home planet and in low Earth orbit. The following are 2024 space technology advancements:
      Deployed NASA’s Advanced Composite Solar Sail System in space, marking a successful test of its composite boom technology. Performed record-breaking laser communications with NASA’s Deep Space Optical Communications technology demonstration by sending a laser signal from Earth to NASA’s Psyche spacecraft about 290 million miles away. NASA’s Advanced Composite Solar Sail System and Deep Space Optical Communications were named among TIME’s Inventions of 2024, along with the agency’s Europa Clipper spacecraft. Supported 84 tests of technology payloads via 38 flights with six U.S. commercial flight providers through NASA’s Flight Opportunities Program. Enabled the first NASA-supported researcher to fly with their payload aboard a commercial suborbital rocket. Advanced critical capabilities for autonomous networks of small spacecraft with NASA’s Starling demonstration, the first satellite swarm to autonomously distribute information and operations data between spacecraft. Demonstrated space-age fuel gauge technology, known as a Radio Frequency Mass Gauge, on Intuitive Machines’ Nova-C lunar lander, to develop technology to accurately measure spacecraft fuel levels. Performed an in-space tank to tank transfer of cryogenic propellent (liquid oxygen) on the third flight test of SpaceX’s Starship. Licensed a new 3-D printed superalloy, dubbed GRX-810, to four American companies to make stronger, more durable airplane and spacecraft parts. Manufactured 3D-printed, liquid oxygen/hydrogen thrust chamber hardware as part of NASA’s Rapid Analysis and Manufacturing Propulsion Technology project, which earned the agency’s 2024 “Invention of The Year” award for its contributions to NASA and commercial industry’s deep space exploration goals. Pioneered quantum discovery using the Cold Atom Lab, including producing the first dual-species Bose-Einstein Condensates in space, the first dual-species atom interferometers in space, and demonstrating the first ultra-cool quantum sensor for the first time in space. Announced two new consortia to carry out ground-based research investigations and conduct activities for NASA’s Biological and Physical Sciences Space Biology Program, totaling $5 million. Awarded $4.25 million across the finales of three major NASA Centennial Challenges, including Break the Ice, Watts on the Moon, and Deep Space Food to support NASA’s Artemis missions and future journeys into deep space.  Launched a collaborative process to capture the aerospace community’s most pervasive technical challenges, resulting in a ranked list of 187 civil space shortfalls to help guide future technology development projects, investments, and technology roadmaps. Growing Global Partnerships
      Through the Artemis Accords, almost 50 nations have joined the United States, led by NASA with the U.S. State Department, in a voluntary commitment to engage in the safe, transparent, and responsible exploration of the Moon, Mars, and beyond. The Artemis Accords represent a robust and diverse group of nation states, representing all regions of the world, working together for the safe, transparent, and responsible exploration of the Moon, Mars and beyond with NASA. More countries are expected to sign the Artemis Accords in the weeks and months ahead.
      During a May workshop with Artemis Accords signatories in Montreal, Canada, NASA led a tabletop exercise for 24 countries centered on further defining and implementing key tenets, including considering views on non-interference, interoperability, and scientific data sharing among nations. A NASA delegation participated in the 75th International Astronautical Congress in Milan. During the congress, NASA co-chaired the Artemis Accords Principals’ Meeting, which brought together 42 nations furthering discussions on the safe and responsible use of space for the benefit of all. Celebrating Total Solar Eclipse
      During the total solar eclipse on April 8, NASA helped the nation enjoy the event safely and engaged millions of people with in-person events, live online coverage, and citizen science opportunities. NASA also funded scientists around North America to take advantage of this unique position of the Sun, Moon, and Earth to learn more about the Sun and its connection to our home planet. Highlights of the solar celebration include:
      The space station crew were among the millions viewing the solar eclipse. NASA collaborated with the Indianapolis Motor Speedway, Google, NCAA Women’s Final Four, Peanuts Worldwide, Microsoft, Sésamo, LEGO, Barbie, Major League Baseball, Third Rock Radio, Discovery Education, and others on eclipse-inspired products and social posts to support awareness of the eclipse and the importance of safe viewing. More than 50 student teams participated in NASA’s Nationwide Eclipse Ballooning Project, with some becoming the first to measure atmospheric gravity waves caused by eclipses. Building Low Earth Orbit Economy
      In August, NASA announced the development of its low Earth orbit microgravity strategy by releasing 42 objectives for stakeholder feedback. The strategy helps to guide the next generation of human presence in low Earth orbit and advance microgravity science, technology, and exploration. NASA is refining the objectives with collected input and will finalize the strategy before the end of the year. Additional advancements include:
      NASA modified agreements for two funded commercial space station partners that are on track to develop low Earth orbit destinations for the agency and other customers. A NASA-funded commercial space station, Blue Origin’s Orbital Reef, completed multiple testing milestones for its critical life support system as part of the agency’s efforts for new destinations in low Earth orbit. A full-scale ultimate burst pressure test on Sierra Space’s LIFE (Large Integrated Flexible Environment) habitat structure was conducted, an element of a NASA-funded commercial space station. The agency’s industry partners, through the second Collaborations for Commercial Space Capabilities initiative and Small Business Innovation Research Ignite initiative, completed safety milestones, successful flight tests, and major technological advancements. As NASA opens access to space by working with private industry, the agency shared its medical expertise, human system integration knowledge, utilization requirements, and commercial space food insight to aid in developing safe, reliable, innovative, and cost-effective space stations. To address a rapidly changing space operating environment and ensure its preservation for generations to come, NASA released its integrated Space Sustainability Strategy in April. The agency tested the Sierra Space Dream Chaser spaceplane for the extreme environments of space at NASA’s Neil Armstrong Test Facility in Sandusky, Ohio. NASA’s Glenn Research Center in Cleveland streamed 4K video footage from an aircraft to the space station and back for the first time using optical, or laser, communications. Inspiring Artemis Generation of STEM Students
      NASA continues to offer a wide range of science, technology, engineering, and mathematics (STEM) initiatives and activities, reaching and engaging the next generation of scientists, engineers, and explorers. The agency’s STEM engagements are enhanced through collaborations with partner organizations, the distribution of various grants, and additional strategic activities. Key 2024 STEM highlights include:
      Awarded nearly $45 million to 21 higher-education institutions to help build capacity for research, and announced the recipients of grants that will support scientific and technical research projects for more than 20 universities and organizations across the United States. Planted a “Moon Tree,” a seedling that traveled around the Moon and back aboard the agency’s Artemis I mission in 2022, at the U.S. Capitol in Washington. The event highlighted a partnership with the U.S. Forest Service that invited organizations across the country to host the seedlings. Partnered with Microsoft’s Minecraft to engage students in a game-based learning platform, where players can experience NASA’s discoveries with interactive modules on star formation, planets, and galaxy types, modeled using real James Webb Space Telescope images. Collaborate with the U.S. Department of Education to bring STEM to students during after-school hours under the 21st Century Community Learning Centers program, which aims to reach thousands of students in more than 60 sites across 10 states. Launched NASA Engages, a platform to connect and serve the public by providing agency experts to share their experiences working on agency missions and programs. With more than 55,000 applications for NASA internships across the spring, summer and fall sessions, a new recruitment record, NASA helped students and early-career professionals make real contributions to space and science missions. Expanded the agency’s program to help informal educational institutions like museums, science centers, libraries, and other community organizations bring STEM content to communities, resulting in 42 active awards across 26 states and Puerto Rico. Hosted the 30th Human Exploration Rover Challenge, one of NASA’s longest-standing student challenges, with participation from more than 600 students and 72 teams from around the world. Reaching New, Future Explorers
      NASA’s future-forward outreach to current and new audiences is key to providing accessibility to the agency’s scientific discoveries and to growing the future STEM workforce. NASA’s creative and inclusive 2024 strategies to reach the public include:
      NASA’s on-demand streaming service, NASA+, achieved four times the viewership of the agency’s traditional cable channel, marking a major milestone in its ongoing web modernization efforts. As part of the digital transformation, NASA said goodbye to NASA Television, its over-the-air broadcast, streamlining how it delivers the latest space, science, and technology news. NASA+ marked its first year of operation Sept. 23, and visitors have played 1,036,389 hours of programming. April 8, the day of the total solar eclipse, brought in 32 million views to NASA’s websites, more than 15 times additional views than the average this year. On average, NASA websites receive 33.4 million views every month. NASA social media accounts saw an increase of 4% in followers since 2023, from 391.2 million in 2023 to 406.8 million this year. On average, NASA accounts see close to 25 million engagements each month.Notable live social media events in 2024 included the first-ever Reddit Ask Me Anything with the platform’s 23-million member “Explain Like I’m Five” community; the first X Spaces conversation from space; and NASA’s first Instagram Live of a launch, which contributed 410,000 of the 6.6 million views of the Boeing Starliner Crew Flight Test launch. NASA Twitch launched custom emotes, issued channel points for the first time, and collaborated with an external Twitch creator, a how-to conversation with astrophotographers and NASA experts about photographing the Moon. NASA aired live broadcasts for 14 mission launches in 2024. The agency’s official broadcast of the 2024 total solar eclipse and its telescope feed are the top two most-watched livestreams this year on NASA’s YouTube.The agency’s YouTube livestreams in 2024 surpassed 84.7 million total views.   NASA broadcasts often were enhanced by the presence of well-known athletes, artists, and cultural figures. The solar eclipse broadcast alone featured musician Lance Bass, actor Scarlett Johannson, NFL quarterback Josh Dobbs, and Snoopy. The agency’s podcasts surpassed 9.7 million all-time plays on Apple Podcasts and Spotify. The NASA app was installed more than 2.1 million times in 2024.   The number of subscribers to NASA’s flagship and Spanish newsletters total more than 5 million. NASA celebrated the 5th anniversary of the Hidden Figures Way street renaming. The program honored the legacy of Katherine Johnson, Dorothy Vaughan, Mary Jackson, and Christine M. Darden, and others who were featured in Margot Shetterly’s book – and the subsequent movie – Hidden Figures, and their commitment to science, justice, and humanity. The agency signed Space Act agreements with the National Association for the Advancement of Colored People and the Hispanic Heritage Foundation to increase engagement and equity for underrepresented students pursuing STEM fields and reduce barriers to agency activities and opportunities. As part of its plans to reach new audiences, NASA continued to focus on developing Spanish-language content. This year, the agency:Launched its second season of the Spanish-language podcast Universo curioso de la NASA. More than doubled the number of yearly posts to its science-focused website in Spanish, Ciencia de la NASA, and grew the website’s traffic by five-fold. Produced live broadcasts for the 2024 total solar eclipse and for the launch of the Europa Clipper mission, which reached a combined audience of more than 5 million viewers around the world. Published a video about how NASA and ESA (European Space Agency) cooperate to train astronauts. Released an astrobiology graphic novel and the agency’s economic impact yearly report in Spanish, among other outreach materials. Relaunched the NASA Art Program with two space-themed murals in New York’s Hudson Square neighborhood in Manhattan. The vision of the reimagined NASA Art Program is to inspire and engage the Artemis Generation with community murals and art projects for the benefit of humanity. A DC-8 Airborne Science Laboratory Workshop documented and celebrated the important scientific work conducted aboard NASA’s legendary DC-8 and captured lessons of the past for current and future operators.  The Deep Space Network beamed a Missy Elliott song to space on July 12.  NASA partnered with Crayola Education to develop content for Crayola’s annual Creativity Week held in January, which reached more than 6 million kids from 100 countries.  On the eve of the 55th anniversary of the Apollo 11 Moon landing, NASA Johnson named one of its central buildings the “Dorothy Vaughan Center in Honor of the Women of Apollo.” Actress Octavia Spencer narrated a video for the event.  NASA’s Ames Research Center in California’s Silicon Valley hosted social media creators in space, science, and engineering for a behind-the-scenes tour of the center’s world-class facilities. Engaging largely untapped NASA audiences of more than 155,000 in Illinois, Michigan, and Minnesota, NASA’s Glenn launched NASA in the Midwest, an integrated approach to bring awareness to the agency’s connections to the region to large-scale festivals and surrounding community institutions. Reaching 500,000 in-person attendees, NASA Stennis supported the agency’s return to the ESSENCE Festival of Culture in New Orleans. NASA’s Wallops Flight Facility in Virginia developed a dance engagement program in partnership with the Eastern Shore Ballet Theatre, introducing new audiences to the agency while blending arts and science. NASA participated in more than 3,700 events planned with an estimated reach of more than 17 million worldwide. This was accomplished through in-person, hybrid, and virtual outreach activities and events. The agency’s Virtual Guest Program engaged 277,370 virtual guests across 13 events, with an average of 145 countries, regions, and territories represented per event. There also were many notable engagements highlighting the intersection of space and sports in 2024, including the Stanley Cup visiting NASA Kennedy for photographs as part of the agency’s growing partnership with the National Hockey League. NASA Glenn also collaborated with The Ohio State University Marching Band for its halftime show during the university’s football game on Sept. 21. A video greeting from astronauts aboard the International Space Station introduced the show, which featured aerospace-themed music and numerous formations including the final formation the NASA Meatball.
      For more about NASA’s missions, research, and discoveries, visit:
      https://www.nasa.gov
      -end-
      Meira Bernstein / Cheryl Warner
      Headquarters, Washington
      202-358-1600
      meira.b.bernstein@nasa.gov / cheryl.m.warner@nasa.gov
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      Last Updated Dec 06, 2024 EditorJessica TaveauLocationNASA Headquarters Related Terms
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