NASA Welcomes Latvia as Newest Artemis Accords Signatory  

NASA Welcomes Latvia as Newest Artemis Accords Signatory  

Dace Melbārde, Latvia’s Minister for Education and Science, second from right, signs the Artemis Accords, as NASA Administrator Jared Isaacman, second from left, Jacob Helberg, U.S. Under Secretary of State for Economic Affairs, left, and Jānis Beķeris, Chargé D’Affaires a.i. at the Embassy of the Republic of Latvia to the United States, right, look on Monday, April 20, 2026, at the Mary W. Jackson NASA Headquarters building in Washington. The Artemis Accords graphic of all signatory flags is behind them.
Latvia’s Minister for Education and Science Dace Melbārde, second from right, signs the Artemis Accords, as NASA Administrator Jared Isaacman, second from left, U.S. Under Secretary of State for Economic Affairs Jacob Helberg, left, and chargé d’affaires a.i. at the Embassy of the Republic of Latvia to the United States Jānis Beķeris, right, look on Monday, April 20, 2026, at the Mary W. Jackson NASA Headquarters building in Washington.
NASA/Joel Kowsky

The Republic of Latvia signed the Artemis Accords Monday during a ceremony hosted by NASA at the agency’s headquarters in Washington, becoming the 62nd nation to commit to responsible space exploration for all humanity. 

“We are proud to welcome Latvia to the Artemis Accords,” said NASA Administrator Jared Isaacman. “Each new signatory strengthens a coalition committed to the transparent and peaceful exploration of space. The accords are the foundation for real missions and real cooperation on the lunar surface, and Latvia’s commitment strengthens our shared vision for this next great era of exploration.”

Latvia’s Minister for Education and Science Dace Melbārde signed on behalf of the country. Chargé d’affaires a.i. at the Embassy of the Republic of Latvia to the United States Jānis Beķeris and U.S. Under Secretary of State for Economic Affairs Jacob Helberg also participated in the event. 

“Today, Latvia aligns with a shared vision for humanity beyond Earth, grounded in international cooperation and the peaceful, transparent, and responsible exploration of outer space,” said Melbārde. “By joining the Artemis Accords, we make a clear commitment to these principles. Latvia already contributes to the global space ecosystem through its industry and research, and we look forward to the opportunity to deepen cooperation with the United States and NASA, contributing to future space activities under the Artemis framework. Participation in the Artemis Accords is also an investment in the development of our students, researchers, and innovators.” 

Last month, NASA announced plans to return to the Moon routinely and affordably, establishing an enduring presence and building a sustained lunar base. More than 40 Artemis Accords countries across six continents sent representatives to Washington for the event, announcing new opportunities for exploration and science. The group represented more than two thirds of the current Artemis Accords signatories.  

In 2020, during the first Trump Administration, the United States, led by NASA and the U.S. Department of State, joined with seven other founding nations to establish the Artemis Accords, responding to the growing interest in lunar activities by both governments and private companies. The accords introduced the first set of practical principles aimed at enhancing the safety and coordination between like-minded nations as they explore the Moon, Mars, and beyond.  

Signing the Artemis Accords means committing to explore peaceably and transparently, to render aid to those in need, to enable access to scientific data that all of humanity can learn from, to ensure activities do not interfere with those of others, and to preserve historically significant sites and artifacts by developing best practices for space exploration for the benefit of all. 

More countries are expected to sign the Artemis Accords in the months and years ahead, as NASA continues its work to establish a safe, peaceful, and prosperous future in space. 

Learn more about the Artemis Accords at: 

https://www.nasa.gov/artemis-accords

-end-

Camille Gallo / Elizabeth Shaw 
Headquarters, Washington 
202-358-1600 
camille.m.gallo@nasa.gov / elizabeth.a.shaw@nasa.gov 

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Elizabeth Shaw

Wheels Up for X-59

Wheels Up for X-59

NASA’s X-59 flies above the Mojave Desert on a clear day. The white aircraft has light gray, red, and blue accents, with a NASA logo and the number 859 on its tail. It appears flying level over the desert landscape, with a mountain range visible on the horizon and a trail of clouds above.
NASA

NASA’s X-59 quiet supersonic research aircraft flies over the Mojave Desert in California in this April 14, 2026, image. The transition to flying with wheels up is a key milestone and an important step in the experimental aircraft’s test campaign.

The X-59 has made its highest and fastest flights so far, expanding its operational range and making progress toward supersonic flight. In future flights, the team will also be looking at factors like the performance of its controls, loads and structural dynamics, and subsystems including hydraulics, fuel, avionics, landing gear, and more. They will also be monitoring the performance of the eXternal Vision System, the series of cameras located on the X-59 connected to a display in the cockpit. The system takes the place of a traditional forward windscreen.

NASA’s Quesst mission, which features the one-of-a-kind X-59 aircraft, will demonstrate technology to fly supersonic, or faster than the speed of sound, without generating loud sonic booms.

Keep up with the latest X-59 news on the NASA Quesst blog.

Image credit: NASA

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Monika Luabeya

CSDA Quality Assessment Report Evaluates Satellogic NewSat Data

CSDA Quality Assessment Report Evaluates Satellogic NewSat Data

Issued March 9, 2026, the Commercial Satellite Data Acquisition Program Satellogic NewSat Radiometric & Geometric Quality Assessment Report documents the evaluation process of the NASA subject matter experts (SMEs) enlisted to analyze the quality of the constellation’s radiometric and geometric data products.
NASA/CSDA

A new quality assessment report from NASA’s Commercial Satellite Data Acquisition (CSDA) program approves the use of data from Satellogic’s NewSat constellation, which includes the Mark IV and Mark V sensor generations, for scientific use.

Issued March 9, 2026, the Commercial Satellite Data Acquisition Program Satellogic NewSat Radiometric & Geometric Quality Assessment Report documents the evaluation process of the NASA subject matter experts (SMEs) enlisted to analyze the quality of the constellation’s radiometric and geometric data products.

The SMEs analyzed 60 top-of-atmosphere reflectance images collected between 2021 and 2025, focusing on radiometric and geometric performance across multiple sites. Results showed generally strong radiometric accuracy, with the majority of spectral bands performing within 10% of Aqua MODIS reference values and signal-to-noise ratios meeting “Good” rating criteria for more than half of the bands. Geometric performance exceeded their specified sensor spatial response specifications, with some variability noted between sensor generations. (The Mark IV received an “Excellent” grade for sensor spatial response while the Mark V received a “Basic” grade.)

Since the release of the report, Satellogic has changed aspects of their data processing, in part to address findings and recommendations in the report. CSDA is engaged in a quality assessment of their revised products and will report on the results in the near future.

About the CSDA Program

NASA’s Earth Science Division (ESD) established the CSDA program to identify, evaluate, and acquire commercial remote sensing data that enhances NASA’s Earth science research and applications. CSDA provides structured on-ramping opportunities for emerging commercial satellite data vendors, enabling NASA to continuously integrate innovative data sources as the private sector evolves. By leveraging these partnerships, NASA’s ESD aims to accelerate scientific discovery and expand applications of Earth observation data for the NASA Earth science research and applications community and societal benefit.

Since its initial pilot, the CSDA Program has conducted three on-ramp activities, resulting in the addition of several vendors into sustainment. Since then, the program has streamlined its evaluation process by introducing high-quality, SME-led data assessments, accelerating reviews and strengthening NASA’s engagement with the rapidly growing commercial data ecosystem. The CSDA’s evaluation criteria include:

  • Accessibility of data
  • Completeness and accuracy of metadata
  • User support services provided by the commercial entity
  • Usefulness of submitted data for science and applications

This approach ensures NASA gains timely access to high-quality, mission-relevant commercial data, and provides valuable feedback to private-sector providers, fostering innovation, improved data products, and alignment of industry capabilities with NASA’s evolving scientific needs.

Resources

To read the CSDA’s Satellogic NewSat Radiometric & Geometric Quality Assessment Report, visit the CSDA website.

View the recent CSDA Vendor Focus Webinar on Satellogic on the CSDA program’s YouTube channel.

For more information about the CSDA program’s process for identifying commercial satellite vendors for on-ramp and evaluation, visit the CSDA website.

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Plants and Worms Informing Future Missions; Crew Preps for Computer Upgrades

Plants and Worms Informing Future Missions; Crew Preps for Computer Upgrades

Expedition 74 flight engineers (from left) Chris Williams, Jack Hathaway, Sophie Adenot, and Jessica Meir are inside the International Space Station’s cupola, waiting to observe the plasma trail of the Orion spacecraft—with the Artemis II crew aboard—as it reenters Earth’s atmosphere.
Expedition 74 flight engineers (from left) Chris Williams, Jack Hathaway, Sophie Adenot, and Jessica Meir are inside the International Space Station’s cupola, waiting to observe the plasma trail of the Orion spacecraft—with the Artemis II crew aboard—as it reenters Earth’s atmosphere on April 10, 2026.
NASA/Jessica Meir

Advanced botany and biology research to sustain crews on future missions to the Moon, Mars, and beyond wrapped up the week aboard the International Space Station. The Expedition 74 crew also continued unpacking a U.S. cargo craft while keeping up the maintenance of the orbital outpost.

NASA flight engineer Chris Williams kicked off his shift gathering hardware and samples for the Veg-06 space botany study investigating how plants and microbes interact in microgravity. Next, Williams mixed nutrients for the alfalfa and microbe samples being housed inside the Columbus laboratory module’s Veggie facility. Results may advance the development of ways to grow plants for food on future space missions.

ESA (European Space Agency) flight engineer Sophie Adenot worked inside the Harmony module setting up research and video gear to begin exploring how microgravity affects an astronaut’s gut health. She recorded roundworms observing how their bodies and their gut microbes change in microgravity. Results may lead to the development of probiotics, or “living medicines,” to protect health in spaceflight and treat diseases and disorders on Earth.

Afterward, Adenot and Williams joined NASA flight engineer Jessica Meir and continued unpacking new scientific gear, crew supplies, and more from inside Northrop Grumman’s Cygnus XL cargo spacecraft. Meir started her shift in the Kibo laboratory module filming content for JAXA (Japan Aerospace Exploration Agency) to promote space awareness and commercialization of low Earth orbit.

NASA flight engineer Jack Hathaway focused primarily on lab maintenance throughout Friday. Hathaway first replaced filters on the urine processing assembly located in the Tranquility module’s waste and hygiene compartment, or bathroom. Following that, he inspected berthing hardware that the Cygnus XL and JAXA’s HTV-X1 spacecraft are attached to during their missions at the orbital outpost. Finally, he installed protective rings around ventilation valves in the Unity and Tranquility modules then photographed his work for analysis.

Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev were once again inside the Zvezda service module conducting maintenance and inspections throughout Friday. Flight engineer Andrey Fedyaev inspected the ventilation system connecting the Roscosmos segment of the station with the U.S. segment then measured the airflow between the two segments.

At the end of the day all seven Expedition 74 crewmates joined each other and reviewed upcoming computer upgrades planned for the weekend. The orbital residents will first replace network servers then activate their new, more powerful laptop computers. Support teams on the ground will assist the crew with the software updates, network configurations, and other technical transitions.

Learn more about station activities by following the space station blog, @space_station on X, as well as the ISS Facebook and ISS Instagram accounts.

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Mark A. Garcia

Webinar 4/29: NASA CSDA Program Vendor Focus- MDA Space

Webinar 4/29: NASA CSDA Program Vendor Focus- MDA Space

An artistic rendering of the MDA Space CHORUS-C (right), RADARSAT-2 (centre), and CHORUS -X (left) synthetic aperture radar (SAR) Earth observation constellation in orbit above Earth. RADARSAT-2 was launched in 2007, with CHORUS - C/X satellites planned for Q4 2026 launch. The SAR imaging satellites fly in formation over the planet’s curved horizon at sunrise. Each satellite features large deployable solar arrays and a broad radar antenna structure used to capture high-resolution imagery of Earth’s surface day or night and through cloud cover. The scene emphasizes the three-satellite SAR mission architecture, showing the satellites positioned to deliver coordinated CHORUS-C and RADARSAT-2 wide-area monitoring, with following CHORUS-X high-resolution imaging.
Artistic rendering of the MDA Space CHORUS-C (right), RADARSAT-2 (centre), and CHORUS -X (left) synthetic aperture radar (SAR) Earth observation constellation in orbit above Earth.
NASA/CSDA

NASA’s Earth Science Division (ESD) established the Commercial Satellite Data Acquisition (CSDA) program to explore the potential of commercial satellite data in advancing the agency’s Earth science research and application objectives. The program aims to identify, assess, and acquire data from commercial providers, which may offer a cost-effective means of supplementing Earth observations collected by NASA, other U.S. Government agencies, and international collaborators.

During this NASA CSDA program vendor webinar, speakers will introduce MDA Space and the company’s satellite constellation; show participants how to discover, access, and work with these satellite C-band synthetic aperture radar (SAR) products; and speak to how these data products complement NASA Earth science data holdings for research and applications. Additional topics will focus on the services available to data users and getting assistance with the NASA CSDA program vendor MDA Space datasets, services, and tools.

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