Wednesday, 10 June 2026

GLOBE Mission Earth Educators Participate in Land Cover Community of Practice

3 min read

GLOBE Mission Earth Educators Participate in Land Cover Community of Practice

During the 2025-2026 school year, educators from the NASA Science Activation Program’s GLOBE (Global Learning and Observation to Benefit the Environment) Mission Earth project participated in a specialized Community of Practice led by NASA Langley Research Center to refine how students interact with NASA’s land cover data (MODIS, Landsat, and Sentinel-2). Their collaboration focused on four key areas:

  • Data Collection: Improving the process of making and submitting land cover observations to NASA using the GLOBE Observer App.
  • Curriculum Integration: Identifying connections between land cover observations, satellite data, and classroom learning.
  • Student Research: Brainstorming potential land cover research topics/questions for students.
  • Validation: Providing expert feedback on the satellite comparison process.

Through GLOBE, communities can contribute meaningful environmental data to a long-term data record. When participants make observations of land cover via GLOBE Observer, the team at NASA Langley compares their observation with satellite data for a similar time and location and sends a satellite comparison email, which includes a data table that shows how their GLOBE observation and the corresponding satellite data compare. 

Key Community of Practice Findings:
The Community of Practice included a total of 14 educators, with six actively collecting land cover observations with their students using the GLOBE Observer app. These land cover observations were collocated to MODIS, Landsat, and Sentinel-2 data with educators receiving a satellite comparison email. 

Within the scope of this Community of Practice, 10 of the educators developed student research plans for the 2026-2027 school year focused on land cover data, addressing questions such as:

  • How does land cover affect surface temperature?
  • How has land use changed over time for our local area?
  • How does land cover differ for locations (such as other schools) at the same latitude but different longitudes?
  • How do different land covers impact flooding?

The educators were extremely excited to have the opportunity to interact and learn from each other as a community, as well as to connect with NASA subject matter experts. Based on lessons learned from the Community of Practice, the team has a better understanding of how NASA land cover data can be incorporated in the classroom, what types of research questions educators might present to their students, and resources that could be developed to assist educators in the implementation of their research plans. 

Within the scope of the Land Cover Community of Practice (COP), educators were asked to provide feedback for the GLOBE Mission Earth GLOBE Nature Notes Guide that was developed by the NASA Langley team, leveraging the Nature Note model created by the NASA Science Activation program’s Learning Ecosystems North East (LENE) project, which is led by the Gulf of Maine Research Institute. The GLOBE Nature Notes aligned with GLOBE protocols were developed to assist educators in integrating the Nature Notes process with their students’ GLOBE observations. One of the COP educators is currently developing an example of a land cover GLOBE Nature Note that will be shared with the GLOBE and NASA Science Activation community, once completed.

Educators can join the GLOBE Program and contribute observations of Land Cover and other environmental conditions by downloading the GLOBE Observer app and learning more about Land Cover.

Screenshot of a NASA GLOBE Observer satellite comparison table emailed to a participant after submitting a land cover observation. The report includes the observation date and time, geographic coordinates, and surface condition details such as dry ground, leaves present, muddy conditions, and weather observations. A row of six participant photos labeled North, East, South, West, Up, and Down shows the surrounding environment near a waterfront with buildings, pavement, sky, and water visible. Below the photos is a land cover classification section with a color-coded map comparing the participant’s observation area to MODIS satellite land cover data. A legend identifies categories including water bodies, forests, wetlands, croplands, urban and built-up lands, and barren areas. The classification for this observation is listed as “Urban and Built-up Lands.” At the bottom of the report, side-by-side satellite images from Landsat 8 & 9 and Sentinel-2A and 2B display the same geographic area from orbit. The document demonstrates how NASA Langley’s GLOBE Mission Earth Science Activation project compares community-submitted land cover observations with satellite imagery and land classification datasets.
Sample of a NASA GLOBE Observer satellite comparison table that gets emailed to a participant after submitting a land cover observation. (NASA Langley GLOBE Mission Earth Science Activation project team).
NASA GLOBE Observer

GLOBE Mission Earth is supported by NASA under cooperative agreement award number NNX16AC54A and is part of NASA’s Science Activation Portfolio. Learn more about how Science Activation connects NASA science experts, real content, and experiences with community leaders to do science in ways that activate minds and promote deeper understanding of our world and beyond: https://science.nasa.gov/learn/about-science-activation/.

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Last Updated
Jun 10, 2026


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Tyndall’s Trail of Bergs

A top-down photo shows a glacier running from north to south amid snowy, mountainous terrain. The glacier flows into a narrow lake where many small icebergs are visible floating on the water.
May 10, 2026

The Southern Patagonian Icefield is the largest expanse of ice in the Southern Hemisphere outside of Antarctica. The mass of glacial ice extends hundreds of kilometers along the spine of the Andes, feeding dozens of dynamic outlet glaciers that grind their way down from higher elevations. Many of these rivers of ice terminate in the sea or in proglacial lakes.

An astronaut aboard the International Space Station photographed one of these glaciers—Tyndall Glacier in southern Chile—through a layer of ethereal clouds on May 10, 2026. Fragments of ice that had calved off its terminus were visible floating on Lago Geikie.

Like most Patagonian glaciers, Tyndall has been shrinking since the end of the Little Ice Age about 150 years ago. Lago Geikie formed at Tyndall’s terminus around 1940, according to glaciologist Mauri Pelto of Nichols College, and gradually expanded as the ice retreated. Part of the glacier previously terminated in Lago Tyndall to the east, but thinning ice cut off that outlet by 2010, Pelto said. (The ice’s retreat also exposed bedrock along its eastern edge that contains scores of ichthyosaur fossils.)

Along with thinning, ice calving off the glacier’s front has reduced its volume. Tyndall has lost 2.2 kilometers (1.4 miles) in length since November 2022, Pelto said, following about a decade of limited retreat with considerable thinning. A significant calving event in March and April 2023 contributed to the recent uptick in ice retreat. During that time, satellites observed several large icebergs breaking away from Tyndall’s terminus.

Austral autumn in 2026 was a time of active calving retreat at Tyndall (and some neighboring glaciers), Pelto said, albeit more incremental than three years prior. “The substantial crevasses crisscrossing the glacier near the calving front lead to many smaller icebergs,” he said. On the other hand, larger tabular icebergs tend to form when there are fewer deep crevasses near the terminus and the glacier’s ice is thinner.

A top-down photo shows a detailed view of the leading edge of a glacier terminating in a lake. The glacial ice is heavily crevassed with intersecting linear features.
May 10, 2026

The ice cliff at the terminus casts a substantial shadow, which can help scientists estimate the height of the glacier’s front. Pelto’s calculations, using information about the Sun’s position provided with the image, indicate that Tyndall’s front loomed 30–40 meters (100–130 feet) above the lake surface in May 2026. Observations from orbit, including astronaut photographs, can help scientists monitor and understand glaciers in remote regions where ground-based observations are scarce.

As for what comes next for Tyndall, Pelto expects many more small icebergs to continue breaking off, given the heavily crevassed appearance of the calving front. “Look for a burst of iceberg production next fall.”

Astronaut photograph ISS074-E-582898 was acquired on May 10, 2026, with a Nikon Z9 digital camera using a focal length of 560 millimeters. It is provided by the ISS Crew Earth Observations Facility and the Earth Science and Remote Sensing Unit at NASA Johnson Space Center. The image was taken by a member of the Expedition 74 crew. The image has been cropped and enhanced to improve contrast, and lens artifacts have been removed. The International Space Station Program supports the laboratory as part of the ISS National Lab to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth. Story by Lindsey Doermann.

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A top-down photo shows a glacier running from north to south amid snowy, mountainous terrain. The glacier flows into a narrow lake where many small icebergs are visible floating on the water.

May 10, 2026 (wide)

JPEG (11.19 MB)

A top-down photo shows a detailed view of the leading edge of a glacier terminating in a lake. The glacial ice is heavily crevassed with intersecting linear features.

May 10, 2026 (detailed)

JPEG (3.43 MB)

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Flight Dynamics Research Facility Characteristics

1 min read

Preparations for Next Moonwalk Simulations Underway (and Underwater)

Flight Dynamics Research Facility Characteristics image showing two wind tunnel fan blade sections.

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Characteristics

The Flight Dynamics Research Facility (FDRF) is a large, subsonic wind tunnel with a vertical test section for conducting flight dynamics research for stability, controllability, free-fall and aircraft spin, and spin recovery testing of atmospheric vehicles.

Characteristics

  • Test Section Dimensions: 20 ft. diam. by 24 ft. high
  • Speed: 0 – 172 ft/s (0 – 117 mph)
  • Dynamic Pressure: (0 – 35 psf)
  • Reynolds Number: 0 – 1.10×10^6 per ft.
  • Pressure: Atmospheric
  • Temperature: Actively cooled (79° F)
  • Test Gas: Air
  • Facility Height: 131 ft.

Flight Dynamics Flight Research

Aerosciences Evaluation and Test Capabilities

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Last Updated
Jun 09, 2026
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Artemis III Crew Announced

From left to right, NASA astronaut Andre Douglas, ESA (European Space Agency) astronaut Luca Parmitano, and NASA astronauts Randy Bresnik and Frank Rubio take a photo together. Their arms are linked around each other's shoulders. Behind them are the flags of the United States, Texas, NASA, and ESA.
NASA/Robert Markowitz

NASA astronaut Andre Douglas, ESA (European Space Agency) astronaut Luca Parmitano, and NASA astronauts Randy Bresnik and Frank Rubio take a photo together on June 9, 2026. The four were announced as the Artemis III crew.

NASA’s Artemis III mission in low Earth orbit will test integrated operations between the Orion spacecraft and one or both commercial landers from SpaceX and Blue Origin respectively.

Learn more about the next Artemis mission and the crew.

Image credit: NASA/Robert Markowitz



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Tuesday, 9 June 2026

June 2026 Satellite Puzzler

A series of tan parallel ridges runs from left to right, with green areas and small lakes filling the low-lying spaces in between.

Every month, NASA Earth Observatory features a puzzling satellite image. The June 2026 puzzler appears above. 

Your Challenge
I
dentify the location shown in this satellite image. Share what clues you see, where you think it is, and what makes this place interesting or unique to you.

How to Answer
Submit your response using this form and select “Puzzler Answer” as the topic. Please include your preferred name or alias.

You can keep it simple and just guess the location. Want to impress us? Tell us which satellite and instrument captured the image, which spectral bands were used, or point out a subtle detail about the geology or history of the area. If something catches your eye, or if this is your home or means something to you, we’d love to hear about it.

The Prize
We can’t offer prize money or a trip to space to see Earth like satellites and astronauts do. But we can offer something almost as rewarding: puzzler bragging rights.

About a week after the challenge, we’ll post the answer at the top of this page, along with a link to an Earth Observatory Image of the Day story that explains the image in more detail. We’ll recognize the first person who correctly guesses the location, and we may also highlight readers who share especially thoughtful or interesting answers. By submitting a response, you acknowledge that your comments may be edited, excerpted, and published on this page.

Until then, zoom in, look closely, and enjoy the challenge. See you at the reveal!



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NASA Knows: What Is Mass Distribution?

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NASA Knows: What Is Mass Distribution?

An outline of a soccer ball with Distribution of Mass title

This article is for students grades 5-8.

Mass distribution affects everything from galaxy shapes to aircraft design to planetary rotation. It’s used to map stars in our universe, figure out what planets are made of, and even to determine how luggage is loaded onto an airplane.

Mass distribution can be a tricky thing to understand. So, let’s explore it using an everyday example: a soccer ball.

How Does Mass Distribution Affect Center of Mass?

Have you ever kicked a soccer ball and wondered why it curves, spins, or sometimes wobbles? Mass distribution plays a part.

On the outside, soccer balls look simple – a series of geometric shapes woven together in a pattern. But on the inside, they are carefully engineered. The key to a great soccer ball is something you can’t see: how the mass is distributed inside the ball.

When engineers build a soccer ball, they try to make sure its mass is evenly balanced in all areas. This is because the way a ball spins and flies depends on how its mass is arranged. If one part of the ball is slightly heavier, its center of mass shifts. If the ball’s center of mass isn’t precisely balanced, the ball won’t move smoothly.

______________________________________________________________________

Words to Know

mass: the measurement of the amount of matter in an object

mass distribution: how mass is spread within an object

center of mass: the unique point around which the mass of an object is perfectly balanced

______________________________________________________________________

How Is Mass Distribution Measured?

Scientists and engineers use tools like precision scales, computer models, and repeated testing to determine an object’s mass distribution. These efforts help them design balanced airplanes, rockets, and even soccer balls. Their goal is to achieve dynamic balance, meaning the object can travel smoothly without unexpected movements.

How Does Gravity Affect How We Study Mass Distribution?

On Earth, gravity hides some of the details about how objects move. In microgravity, astronauts can observe motion more clearly. In 2019, Adidas partnered with NASA and sent soccer balls to the International Space Station.

Astronauts conducted tests to help engineers confirm their designs and understand the physics behind ball motion in ways they simply can’t on Earth. The results of the space station experiments have already helped improve the accuracy and consistency of modern soccer balls.

Try It Yourself

You don’t need to go to space to explore the physics of a ball in motion. Try this experiment at home or school:

  • Grab different types of sports balls (soccer ball, basketball, tennis ball)
  • Spin each one on the ground or between your hands
  • Watch for wobbling, flipping, or smooth spinning

Can you tell which balls are well balanced? Or which ones might have uneven mass distribution?

Career Corner

Are you interested in a career that explores the science and engineering of mass distribution? Many different occupations can help you strike the perfect balance. Here are a few examples:

Computer-Aided Design (CAD) Technician/Drafter: These specialists convert sketches and engineering designs into technical drawings. They use powerful computer software to create detailed 3D and 2D drawings of objects. A two-year associate degree from a technical or community college is key to this career path.

Computational fluid dynamics engineer: These engineers use computer simulation tools to model and analyze fluid behavior in real-world situations. They might study airflow around sport ball designs or explore ways to improve aircraft wings. They need a strong background in engineering and the ability to analyze complex problems.

Physicist: These scientists study matter and energy. They develop models and theories to explain how things work, conduct experiments, and use math to better understand the universe. A career in physics demands a strong understanding of math and complex problem-solving and usually requires an advanced college degree.

More to Explore:



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San Francisco’s Metropolitan Mosaic

A top-down photo of San Francisco shows dense gray urban infrastructure interspersed with green parks. Waves and ships are visible in the surrounding blue-green water.
May 27, 2026

A period of unsettled weather brought scattered showers and thunderstorms to California’s Bay Area on May 27, 2026. That afternoon, a break in the clouds left downtown San Francisco and nearby communities beneath mostly cloud-free skies, allowing an astronaut aboard the International Space Station to take this photograph.

The image captures two of the region’s iconic bridges. The Golden Gate Bridge connects the northern San Francisco Peninsula with Marin County to the north, while the San Francisco-Oakland Bay Bridge spans the bay toward Oakland to the east.  

Near the center of the image, Golden Gate Park stands out as a long, rectangular strip of green amid the dense urban landscape. Spanning more than 1,000 acres (400 hectares), the park encompasses meadows, gardens, wooded areas, and lakes. Additional green space toward the north around the Golden Gate Bridge is part of a national recreation area

The nadir (downward-looking) perspective also provides a clear view of the patchwork of street grids, which were laid out over San Francisco’s hilly terrain as the city grew in successive stages. In the heart of the downtown area, Market Street runs southwest to northeast and serves as a prominent divider between two distinct grid orientations: one aligned with the bay and the other aligned with the street.  

Along the northeastern and eastern waterfront, various structures extend into the bay. Toward the north, these include a historic wharf, seawalls, and piers—most built in the early 1900s, though some date back into the 1800s. The adjacent waters support heavy maritime traffic, including cargo and container ships, cruise vessels, and regional ferries.

Breaking waves are visible along the western coast, including at Ocean Beach, the 3.5-mile stretch of sandy shore adjacent to Golden Gate Park. On May 27, the National Weather Service warned of hazardous conditions at the region’s beaches due to strong northerly winds. Long-period swells from the northwest contributed to the increased risk of rip currents as well as sneaker waves in the days after this image was acquired.

Astronaut photograph ISS074-E-619284 was acquired on May 27, 2026, with a Nikon Z9 digital camera using a focal length of 800 millimeters. It is provided by the ISS Crew Earth Observations Facility and the Earth Science and Remote Sensing Unit at NASA Johnson Space Center. The image was taken by a member of the Expedition 74 crew. The image has been cropped and enhanced to improve contrast, and lens artifacts have been removed. The International Space Station Program supports the laboratory as part of the ISS National Lab to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth. Story by Kathryn Hansen.

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A top-down photo of San Francisco shows dense gray urban infrastructure interspersed with green parks. Waves and ships are visible in the surrounding blue-green water.

May 27, 2026

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GLOBE Mission Earth Educators Participate in Land Cover Community of Practice

Science Science Activation GLOBE Mission Earth Educators… Overview Resources Opportunities Citizen Science Highlights A...