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The Wabanaki people have a deep well of creation myths explaining the rocky coastlines of the Bay of Fundy, Downeast Maine, and Acadia National Park. Many involve Glooscap—a magical figure said to have floated down the Bay of Fundy in a stone canoe, sculpting coastal features by scraping the vessel across the landscape and scattering enormous boulders during battles with primordial beavers, frogs, moose, whales, and other gigantic animals.

Fewer Indigenous creation myths survive to explain the origins of the sandy and marshy shorelines of southern Maine and the rocky, indented coasts of the state’s Midcoast region. But the sharp contrast between the sandy shoals and beaches south of Portland and the rocky shoreline of promontories, headlands, and narrow peninsulas to the east—visible in the Landsat image above—has long drawn the attention of coastal geologists, whose scientific explanations on its origins abound.

The coastal transition reflects both differences in the underlying bedrock and the distribution of sediment left behind by the last glacial maximum, coastal geologists say. Southern Maine has broad deposits of sand, much of it sourced from rivers. The sandy beaches of Saco Bay, for instance, home to Maine’s longest contiguous beach and the state’s largest saltmarsh, received sediment from the weathering and breakdown of the White Mountains, with material transported to the coast largely by the Saco River, explained Peter Slovinsky, a geologist with the Maine Geological Survey. Waves and tides reworked these soft sediments over time, sculpting them into the arch-shaped embayed beaches and sprawling salt marshes found around Saco Bay and the broader region.

While erosion-resistant granite juts from the sandy shorelines in southern Maine to form rocky headlands, metamorphic bedrock becomes the dominant surface feature east of Portland. There, whole ridges and valleys made of rock layers transformed by exposure to high pressures and temperatures define the landscape. During the last ice age, glaciers scoured and widened many of these coastal valleys, which later flooded as the Laurentide Ice Sheet melted and sea levels rose.

Around Casco Bay, these ridge-and-valley systems, combined with the drowning of the shoreline, produce the jagged, highly indented shoreline and many long, narrow islands seen today. “The tortured folds of these old landscapes also set up a sharp directional preference for erosion to exploit,” said Nicholas Whiteman, also a geologist with the Maine Geological Survey. “This led to the eye-catching difference in the orientation of the islands and necks that dominate Casco Bay compared with those to the northeast.”

The various forms that coastlines take fascinate geologists, but they also carry everyday implications for the economies of Maine’s coastal communities. While tourists flock to the sandy beaches of communities like Saco and Kennebunkport, the state’s iconic lobster fisheries are concentrated in Midcoast Maine. The crustaceans thrive in the cold waters of the region’s many rocky, protected inlets, turning communities such as Harpswell into leaders in lobster landings.  

The state’s oyster farms are also concentrated in this region. Casco Bay and the Damariscotta Estuary, sheltered from winds and waves, offer waters that farmers can easily access without large boats. These waters provide a range of temperatures, salinities, and other characteristics that create numerous microclimates where oysters can grow quickly and take on a variety of tastes, known as merroir, explained Tom Kiffney, a researcher at the University of Maine. Kiffney is part of a team of researchers using Landsat and other satellite observations to predict oyster growth rates and help identify the most promising locations for new oyster farms in Maine based on water temperatures and quality.

NASA Earth Observatory image by Michala Garrison, using Landsat data from the U.S. Geological Survey. Story by Adam Voiland.

References & Resources

• Kelley, J. (1987) An Inventory of Coastal Environments and Classification of Maine’s Glaciated Shoreline. Glaciated Coasts, 151-176.
• Kiffney, T., et al. (2026) Using dynamic energy budget modeling and high-resolution satellite products to predict eastern oyster growth at a farm scale. Aquaculture, 612(1), 743133.
• Leland, C. (1884) Algonquin Legends of New England: How Glooskap sailed through the great Cavern of Darkness. Accessed July 17, 2026.
• Maine.gov (2026) Maine’s Coastal Marine Geology. Accessed July 17, 2026.
• Maine Geological Survey (2002) Simplified Bedrock Geologic Map of Maine. Accessed July 17, 2026.
• Maine Geological Survey (1999) The Variety of Maine’s Changing Shoreline. Accessed July 17, 2026.
• Merroir (2026) What is Merroir? Accessed July 17, 2026.
• NASA (2026, January 15) NASA Data Helps Maine Oyster Farmers Choose Where to Grow. Accessed July 17, 2026.
• NASA Earth Observatory (2017) Oyster Prospecting With Landsat 8. Accessed July 17, 2026.
• Snyder, J., et al. (2017) Oyster Aquaculture Site Selection Using Landsat 8-Derived Sea Surface Temperature, Turbidity, and Chlorophyll a. Frontiers in Marine Science, 4(190).
• World History Encyclopedia (2025, February 6) Glooscap Tales. Accessed July 17, 2026.

NASA and its partners will discuss the upcoming crew rotation mission to the International Space Station during a pair of news conferences on Monday, Aug. 3, from the agency’s Johnson Space Center in Houston.

Mission leadership will provide an overview of NASA’s SpaceX Crew‑13 mission at 12 p.m. EDT. Next, crew members will discuss their training and mission preparations at 2 p.m. This is Crew-13’s final media availability prior to traveling to the agency’s Kennedy Space Center in Florida for launch.

NASA will stream these events live. Learn where to watch online:

https://www.nasa.gov/live

The Crew-13 mission will carry NASA astronauts Jessica Watkins and Luke Delaney, CSA (Canadian Space Agency) astronaut Joshua Kutryk, and Roscosmos cosmonaut Sergey Teteryatnikov to the orbiting laboratory. The crew will launch aboard a SpaceX Dragon spacecraft on the company’s Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida no earlier than mid-September.

International media attending in person must email the NASA Johnson newsroom at jsccommu@mail.nasa.gov by 5 p.m., Tuesday, July 21. United States-based media attending in person must respond by 5 p.m., Thursday, July 30. Media joining virtually must respond by 10 a.m. the day of the event. NASA’s media accreditation policy is available online.

Briefing participants are as follows (all times Eastern and subject to change based on real-time operations):

12 p.m.: Mission Overview News Conference

• Joel Montalbano, deputy associate administrator, Human Spaceflight Mission Directorate, NASA Headquarters
• Dana Weigel, manager, Low Earth Orbit Program, NASA Johnson
• Mathieu Caron, director, Astronauts, Life Sciences, and Space Medicine, CSA
• Julianna Scheiman, director, NASA Science and Dragon Programs, SpaceX

2 p.m.: Crew-13 News Conference

• Jessica Watkins, commander, NASA
• Luke Delaney, pilot, NASA
• Joshua Kutryk, mission specialist, CSA
• Sergey Teteryatnikov, mission specialist, Roscosmos

Following the news conference, crew members will be available for limited media interviews. All interview requests must be submitted by 5 p.m. on July 30, to the NASA Johnson newsroom at: jsccommu@mail.nasa.gov.

This will be the second flight to the space station for Watkins, who was selected as a NASA astronaut in 2017. Watkins grew up in Lafayette, Colorado, and earned an undergraduate degree in geological and environmental sciences from Stanford University, as well as a doctorate in geology from the University of California, Los Angeles. As a geologist, she studied the Martian surface and was a member of the Curiosity rover science team at NASA’s Jet Propulsion Laboratory in Southern California. Watkins first launched to the space station as a crew member aboard NASA’s SpaceX Crew-4 mission, spending a total of 170 days in space across space station Expeditions 67/68 in 2022. She will be the first NASA astronaut to launch aboard a SpaceX Dragon spacecraft twice.

Selected as a NASA astronaut in 2021, Delaney earned a bachelor’s degree in mechanical engineering at the University of North Florida and a master’s degree in aerospace engineering at the Naval Postgraduate School. The Florida native is a distinguished naval aviator who participated in exercises throughout the Asia Pacific region and conducted missions in support of Operation Enduring Freedom. As a test pilot, Delaney evaluated developmental aircraft systems and served as a test pilot instructor. He also worked as a research pilot at NASA’s Langley Research Center in Hampton, Virginia, where he supported airborne science missions. This is the first spaceflight for Delaney.

The Crew-13 mission also is the first spaceflight for Kutryk. Prior to his selection as a CSA astronaut in 2017, he served as a CF-18 fighter pilot, flying missions in support of Canada’s NATO, U.N., and North American Aerospace Defense Command commitments. A native of Fort Saskatchewan, Alberta, Kutryk also worked as an experimental and operational test pilot at the Aerospace Engineering Test Establishment in Cold Lake, Alberta. Kutryk received a bachelor’s degree in mechanical engineering from the Royal Military College of Canada in Kingston, Ontario, and he is a distinguished graduate of the United States Air Force Test Pilot school in Edwards, California. He has master’s degrees in space studies, flight test engineering, and defense studies.

This mission will be Teteryatnikov’s first trip to the orbiting laboratory. He graduated from the Naval Academy, St. Petersburg, Russia, in 2011 as an engineer specializing in ship power plant operations. Before his selection as a test cosmonaut, Teteryatnikov served in various naval engineering roles, including undersea vessels and specialized engine room operations. He was selected for the Gagarin Research and Test Cosmonaut Training Center Cosmonaut Corps in 2021 and has served as a test cosmonaut since 2023.

For more information about the mission, visit:

https://www.nasa.gov/mission/nasas-spacex-crew-13

-end-

Joshua Finch / Jimi Russell
Headquarters, Washington
202-358-1100
joshua.a.finch@nasa.gov / james.j.russell@nasa.gov

Leah Cheshier / Anna Schneider
Johnson Space Center, Houston
281-483-5111
leah.d.cheshier@nasa.gov / anna.c.schneider@nasa.gov

An aircraft powered by a megawatt-class hybrid-electric engine developed in collaboration with NASA and built by GE Aerospace, demonstrated flight of an innovation that can inform new generations of fuel-saving aircraft power systems.

Mounted to a Saab 340B aircraft, the engine flew at Farnborough International Air Show in the United Kingdom. It was the public debut of a system that has in recent months made historic test flights, becoming the first hybrid electric-powered aircraft to fly above 30,000 feet.

“This achievement reflects what NASA does best in aeronautics: we explore bold possibilities, validate them through rigorous research and testing, and work with industry to turn breakthrough ideas into technologies that bring real value for the American people,” said Laurie Grindle, director of the Aeronautics Division within the agency’s Research and Technology Mission Directorate at NASA Headquarters in Washington.

The testing leveraged work done through NASA’s former Electrified Powertrain Flight Demonstration project and the agency’s ongoing Subsonic Vehicle Technologies and Tools project – years of collaborative research that included key testing at NASA test facilities. 

The engine integrates electric motors, a gas turbine, and energy storage capabilities. It was designed to demonstrate the capacity to power an aircraft around the size of a regional-class jet, reducing fuel burn and costs without sacrificing performance. The unit’s technology and designs are expected to be used to help develop future hybrid systems that could lower airline operating costs. 

The demonstration flight came after years of rapid development for the technology. For NASA, it also validates work that stretches back to a time when hybrid aviation propulsion seemed almost beyond the horizon of possibility.

“This is the culmination of more than 15 years of work, and we did that because it’s going to have an impact for aircraft that will help reduce energy use and help U.S. companies and the public,” said Ralph Jansen, aerospace engineer at NASA’s Glenn Research Center in Cleveland. “It’s about having a vision that no one believes can happen and then doing the work to define and execute the research and development needed to make it happen.”  

This accomplishment was possible because of the collaborative effort of hundreds of people working on Electrified Powertrain Flight Demonstration and Subsonic Vehicle Technologies and Tools projects across NASA centers, in conjunction with GE Aerospace and its partner companies.

Hybird-Electric Evolves

In recent years, aviation has seen a boom in small aircraft and drones powered by electrical systems drawing from batteries. But large passenger and cargo planes require complex engines capable of supplying massive amounts of power. So more than a decade ago when NASA began contemplating hybrid systems, just the possibility of using electric motors to supplement some energy was a daunting engineering challenge. 

NASA spent about seven years performing preliminary research, working with small businesses and other partners to consider technological obstacles and the potential commercial viability of hybrid systems. During that time, the agency addressed several barriers to implementation including the power, thermal, and battery technology, and the integration of the power system, engine, and aircraft.

Through the agency’s Electrified Powertrain Flight Demonstration award, GE Aerospace and NASA worked with researchers to develop lighter and more efficient power systems and shrink key components – sometimes dramatically. 

NASA and GE Aerospace also leveraged agency facilities and resources to further their research. In 2022, GE Aerospace tested an integrated version of its propulsion system at NASA’s Electric Aircraft Testbed at the agency’s Neil A. Armstrong Test Facility in Sandusky, Ohio. Testing allowed the system to operate in conditions simulating 45,000 feet in altitude, the range in which commercial single-aisle aircraft fly. 

The team added components, including electric motors, power converters, propellers, and a GE Aerospace commercial engine, followed by more ground tests and eventual flight tests. For the researchers who’d spent years on the concept, seeing the engine powering an aircraft in flight was a major step in a long journey.

“I’ve got to say, I was pretty touched seeing it fly. It was just awesome,” Jansen said.  “It’s just like a regular plane, which is probably the best thing of all.”

NASA’s current support for this research is through the Aeronautics Division of its Research and Technology Mission Directorate.

Landslides in Alaska. Air quality in Atlanta. Fire clouds out West. From the Arctic fringes to farm country, NASA’s newest class of suborbital Earth Venture missions is gearing up to deliver science that will benefit communities in the United States and beyond. 

The six projects will mobilize hundreds of scientists and pilots from NASA, the U.S. Navy, universities, and other institutions over the next several years. While the investigations range across topics, a defining feature of suborbital missions is the use of sensors mounted on aircraft. 

Airborne remote sensing serves as a bridge between ground-based instruments and satellites. Data collected via planes, helicopters, drones, and balloons can fill in gaps in computer models used by weather forecasters, city planners, and others.  

When wildfires create their own weather 

The first project to take wing this summer is Injected Smoke and PYRocumulonimbus Experiment (INSPYRE), led by the Naval Research Laboratory. From mission headquarters in Colorado, the team will chase one of the least understood forms of severe weather on Earth: towering “fire clouds” generated when extreme wildfires burn hot enough to brew their own thunderstorms.  

Smoky and crackling with lightning, these unique storms can create blind spots for aviators above and spark new blazes below. Measuring and mapping the dangerous storms as they develop in real-time will help scientists forecast them in the future. Several aircraft, including NASA’s high-altitude ER-2, flying out of Montana, will carry a large suite of instruments over wildfire-generated storm systems. Among them will be two state-of-the-art infrared wildfire trackers, which were developed at NASA’s Jet Propulsion Laboratory (JPL) in Southern California and will be flying as part of the agency’s FireSense program.  

Testing the air over farmland, megacities 

Agricultural emissions represent an important and understudied part of Earth’s land and atmosphere systems. The FarmFlux mission, which kicks off this year, will deploy more than a dozen sensors to measure ozone, methane, ammonia, particulates, and other pollutants rising from agricultural lands and animal farms stretching from the Midwest to California’s Central Valley. These emissions affect human health, global climate, and stratospheric ozone. The mission is led by NASA’s Goddard Space Flight Center in Greenbelt, Maryland, along with Colorado State University, and Boston University. 

Two North American cities with air quality concerns are Atlanta and Mexico City. But the causes differ, with weather and terrain playing a role. To explore these differences, the Hemispheric Airborne Measurements of Air Quality (HAMAQ) mission will investigate areas of poor air in the two capitals and test how satellite information can help forecasting and mitigation efforts. The team will deploy two aircraft at different altitudes: NASA’s P-3B will fly close to the surface, directly measuring fine particle and gaseous pollutants, while the recently acquired 777 science jet will soar high above, mapping pollution with remote sensors.  NASA’s Langley Research Center in Hampton, Virginia, is leading the mission. 

Fast-changing north 

As the Arctic warms at least twice as fast as the rest of Earth, data collected today can help guide communities on the front lines of change.  

The Snow4Flow campaign, led by the University of Arizona, seeks to measure and model how far and fast glaciers are retreating in the far north. Traversing remote icescapes across Alaska, the Yukon, Arctic Canada, Greenland, and Svalbard, Norway, they’ll sound both the near-surface and frozen depths of hundreds of glaciers while flying over in a modernized WWII-era aircraft outfitted with a scanning laser altimeter and two custom radars. Their observations, combined with satellite data and advanced models of snowfall and glacier flow, will advance our understanding of how glaciers behave in different regions of the Arctic. The mission seeks to uncover not just what these glaciers look like beneath the surface today, but the processes that will drive changes in the future. 

As permafrost thaws, rivers on the doorstep of the Arctic become conveyor belts of carbon and sediment. NASA Goddard, and the City College of New York lead a multidisciplinary team studying how rivers, lagoons, and estuaries across Alaska’s North Slope interact with the Arctic Ocean. The project, called Frontlines of Rapidly Transforming Ecosystems (FORTE) will combine optical and radar measurements from satellites, planes, high-tech research vessels, drones, and underwater autonomous systems to track microscopic marine life, water flow, and chemistry. The team will collaborate with local and tribal communities to sustain observations over time and apply NASA assets to address emerging local needs and decision-making priorities.  

Landslide triggers 

When a slow-moving landslide in California suddenly collapsed and buried a section of coastal highway in 2017, scientists at NASA JPL wanted to know how precipitation swings played a role. JPL studies how water infiltrates and destabilizes hillslopes all over the world. The Landslide Change Characterization Experiment (LACCE) project will combine airborne synthetic aperture radar with land-based sensors to track how slopes in California are responding to a world of intensifying droughts and downpours. The project also takes aim at emerging landslide hazards in Alaska, where rapidly retreating glaciers are accelerating slope movements that have the potential to create mega-tsunamis.  

NASA’s Earth Venture Suborbital program, designed to be nimble and high impact, was established following a recommendation by the National Research Council in 2007. In the decades since, teams have studied phenomena, including blizzards, coral reefs, and ocean whirlpools.  

Fifty years ago, NASA’s Viking 1 and 2 landers made the first successful landings on Mars, opening a new era in planetary exploration. Behind that achievement was a team at NASA’s Langley Research Center in Hampton, Virginia, whose steady leadership and technical expertise helped turn an ambitious idea into a mission that reshaped how we explore other worlds.

Building the Blueprint for Mars

NASA selected Langley in 1968 to lead the massive Viking project, the first U.S. mission designed to land safely on Mars and search for signs of life. Project Manager James S. Martin Jr. set the tone from the start. He wanted clear priorities, tough engineering reviews, and the discipline to test every system until the team was confident it would perform on Mars.

Entry, Descent, and Landing

Langley engineers faced a challenge unlike anything attempted before: slowing a spacecraft plunging into the Martian atmosphere at more than 10,000 miles per hour. So they leaned into their expertise in atmospheric entry aerodynamics, heat shielding, and parachute technology. Their work produced the protective aeroshell and heat shield, as well as the supersonic parachute. These systems didn’t come from theory alone — they were shaped by years of wind‑tunnel tests, analysis, and problem‑solving. Langley still excels at entry, descent, and landing systems today.

Science and Safety, Hand in Hand

Langley also helped create a new approach to finding safe landing sites. Teams combined images from Viking’s orbiters with radar data from Earth‑based observatories to identify regions that balanced scientific value with engineering safety — a method now standard for Mars missions.

Viking also changed how mission teams operated. Engineers and scientists adopted the sol — a Martian day slightly longer than 24 hours — to keep daily work aligned with local time on Mars, a practice still used for surface missions.

A Mission Reborn: From Voyager to Viking

Viking grew out of a pivotal program shift. The earlier Voyager Mars lander concept was canceled because it was too costly and risky, relying on two large landers stacked on a single Saturn V rocket. Langley helped chart a more realistic path forward, pairing each lander with its own orbiter and using Titan IIIE‑Centaur rockets instead. The new design preserved scientific ambition while making the mission achievable.

A Legacy That Endures

Viking provided an early model for how NASA could explore the solar system: scout with orbiters, certify landing sites with real data, and land only with systems tested well beyond their limits. That “planetary playbook,” shaped heavily by Langley, provided a guide for future Mars missions like Curiosity and Perseverance.

The two landers returned thousands of images and groundbreaking data, revealing Mars as a world with weather, geologic history, and complexity that scientists are still studying today. And while no human has ever set foot on the Martian surface, Viking proved that reaching another planet — and working on it ­­— was within reach.

As the 50th anniversary of those landings arrives, Langley’s influence is unmistakable. The center continues to advance new entry, descent, and landing technologies, and explore concepts that will support future human explorers. The same spirit that guided Viking still drives the work happening in Hampton today — steady, curious, and always looking toward the next horizon.

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