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SpaceNASA ·

NASA APOD Highlights Remnants of Five Ancient Supernovas in Deep Space Image

NASA's Astronomy Picture of the Day (APOD) for September 24, 2026 features an image showcasing the remnants of five supernovas, described as ghostly structures in deep space. APOD is a long-running NASA initiative that publishes a new astronomical image or photograph each day, accompanied by an explanation from a professional astronomer. The featured image highlights the lingering traces left behind after massive stellar explosions, offering a visual record of past cosmic events. Such supernova remnants are scientifically significant as they provide insight into the life cycles of stars and the dispersal of elements across the universe.

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SpaceNASA ·

Low Cloud Layer Blankets Western Washington and Oregon Coast

A dense low-lying cloud formation recently settled over western Washington and Oregon, creating a distinct autumnal atmosphere across the region. The cloud cover was largely confined to lower elevations, leaving coastal mountain areas rising visibly above the overcast layer. NASA captured imagery highlighting the contrast between the cloud-covered lowlands and the clearer, elevated terrain. The phenomenon is typical of autumn weather patterns in the Pacific Northwest, where marine air and cooling temperatures often produce widespread low cloud or fog.

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SpaceNASA ·

NASA Develops New Technology to Cut Flight Delays and Improve Air Travel

NASA researchers are working to modernize commercial airline systems with the goal of reducing flight delays and improving overall air travel efficiency. The initiative addresses common passenger frustrations such as tarmac delays and holding patterns that push back arrival times. NASA's work focuses on upgrading the technologies and processes that govern how commercial flights operate from takeoff to landing. The effort reflects a broader push to bring innovation to civilian aviation infrastructure. By improving these systems, NASA aims to make air travel more reliable and punctual for everyday passengers.

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SpaceNASA ·

Croatia Becomes 74th Nation to Sign NASA's Artemis Accords

Croatia officially joined the Artemis Accords on Wednesday, becoming the 74th country to sign the international space cooperation agreement. The signing ceremony took place in Zagreb, Croatia's capital city. Representatives from NASA and the U.S. Department of State were present at the event. NASA Deputy Matt Anderson welcomed Croatia's participation in the accords. The Artemis Accords establish shared principles for peaceful and transparent civil space exploration.

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SpaceNASA ·

NASA Picks PRIMA Far-Infrared Telescope as First Probe Explorer Mission

NASA announced on Wednesday that PRIMA, the PRobe far-Infrared Mission for Astrophysics, has been selected to advance to the next phase of development. The space telescope is designed to study the history and evolution of the universe using far-infrared observations. PRIMA holds the distinction of being the first mission chosen under a newly created category called Probe Explorers, part of NASA's long-running Explorers Program. The selection marks a significant step forward in expanding NASA's astrophysics capabilities with a new tier of missions.

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SpaceNASA ·

NASA FarmFlux Mission to Study Agricultural Emissions Over Colorado Farmlands

NASA is conducting low-altitude research flights over Colorado as part of its FarmFlux mission, aimed at studying emissions from agricultural lands and animal farms. The mission will deploy over a dozen sensors to measure pollutants including ozone, methane, ammonia, and particulates. Researchers are focused on understanding how these emissions interact with Earth's atmosphere, an area considered significantly understudied. The project is jointly led by NASA's Goddard Space Flight Center in Greenbelt, Maryland, alongside Colorado-based partners.

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SpaceNASA ·

Hubble Telescope Hunts for Predicted Reappearance of Supernova Athena

NASA's Hubble Space Telescope captured an image of massive galaxy cluster MACS J0417 on September 19, 2026. The cluster acts as a gravitational lens, bending and magnifying light from distant objects behind it. Supernova Athena was originally discovered by NASA's James Webb Space Telescope in 2025. Due to the gravitational lensing effect, the supernova is predicted to reappear within a forecasted window, prompting Hubble to monitor the region. Scientists are using this milestone observation to track the elusive cosmic event.

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SpaceNASA ·

Arctic Sea Ice Hits 2026 Annual Low, Ties for 10th Smallest on Record

Arctic sea ice reached its 2026 annual minimum extent on September 12, according to NASA and the National Snow and Ice Data Center at the University of Colorado Boulder. The ice covered approximately 1.78 million square miles, or 4.6 million square kilometers. This figure ties the extents recorded in 2008, 2010, and 2025, placing 2026 among the ten lowest minimums in the satellite observation record. Scientists track the annual minimum each year as a key indicator of long-term changes in the Arctic climate system.

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SpaceNASA ·

Shannon Lucid's Record-Breaking Six-Month Stay on Russia's Mir Space Station

Astronaut Shannon W. Lucid spent six months living and working aboard the Russian space station Mir alongside two cosmonauts. Selected by NASA in 1978 as one of its first six female astronauts, Lucid became a pioneering figure in American spaceflight. During her mission, she conducted life science research and tended to wheat crops growing in the station's Svet greenhouse. Just three days before her return to Earth, she was still actively monitoring the plant experiments. Her extended stay set a record and highlighted the collaborative nature of U.S.-Russian space operations during that era.

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SpaceNASA ·

NASA Warns of Hazards in Hydrazine Systems After Freeze-Thaw Cycles

NASA's Langley Research Center has issued a Technical Bulletin addressing safety risks linked to freeze-thaw cycles in hydrazine monopropellant systems. The bulletin, authored by Jonathan E. Jones, outlines how repeated freezing and thawing can compromise system reliability and create operational hazards. Hydrazine is a toxic propellant widely used in spacecraft propulsion and auxiliary systems, making proper handling critical. The document provides general recommendations aimed at reducing damage and mitigating risks associated with such temperature-induced stress. The bulletin is available as a downloadable PDF for engineers and mission teams working with these systems.

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SpaceNASA ·

Hubble Space Telescope Completes 200,000th Earth Orbit After 36 Years

NASA's Hubble Space Telescope reached a major milestone on September 19, completing its 200,000th orbit around Earth. Over its 36-year operational lifetime, the observatory has traveled more than 5 billion miles in orbit. Hubble has also surpassed 1.7 million total scientific observations since its launch. The telescope continues to contribute significantly to humanity's understanding of the universe, with observations ongoing at the time of the milestone.

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SpaceNASA ·

APOD: 2026 September 23 – A New Lunar Crater: McGetchin

APOD Science APOD APOD: 2026 September 23 – A… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. AfterBefore A […]

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SpaceNASA ·

Winter Rains Trigger Spectacular Wildflower Blooms Across Western Australia

Western Australia has experienced an exceptional season of wildflower blooms this year. Heavy winter rainfall is credited with triggering the vibrant floral display across the region's arid landscapes. Vast stretches of typically dry, ochre-colored terrain have been transformed by dense carpets of colorful wildflowers. NASA highlighted the phenomenon, drawing attention to the striking visual contrast between the blooms and the surrounding desert environment.

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SpaceNASA ·

Curiosity Rover Resumes Science Work After Labor Day Break on Mars Mission

NASA's Curiosity rover team resumed operations this week following a brief pause due to Labor Day, a public holiday observed across North America on the first Monday of September. The planning team, which includes many members based in North America, conducted two planning sessions on Tuesday and Friday, September 11, 2026. The mission focus involved examining banded geological features on the Martian surface. Catherine O'Connell-Cooper, APXS Strategic Planner and Payload Uplink/Downlink Lead from the University of New Brunswick, Canada, reported on the week's activities. The rover continues its long-running scientific exploration, now surpassing sol 5010 of its mission on Mars.

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SpaceNASA ·

NASA Working Group Reviews Decompression and Blood Clot Risks for Artemis Missions

NASA's Office of the Chief Health and Medical Officer established a working group in August 2026 to assess health risks facing astronauts on Artemis lunar missions. The group reviewed data on decompression sickness linked to spacewalk prebreathe procedures, as well as in-flight cases of venous thromboembolism, or blood clots. Researchers also examined the implications of patent foramen ovale, a heart condition, in the context of these risks. The working group's recommendations build on findings from earlier OCHMO-led reviews, integrating previous outcomes into updated guidance for deep-space missions.

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SpaceNASA ·

NASA-Funded Study Finds Complex Organism Surviving Extreme Heat in Volcanic Park

NASA-supported scientists have discovered a complex organism capable of surviving temperatures previously considered lethal for advanced life forms. High heat typically destroys critical cell components, posing a particular threat to organisms with nuclei that house sensitive genetic material. The organism was found thriving in the hot waters of Lassen Volcanic National Park in California. The discovery challenges existing scientific understanding of the thermal limits that complex, nucleus-bearing life can endure.

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SpaceNASA ·

Chandra Observatory Spots Unusual Low-Energy X-ray Objects in Pinwheel Galaxy

NASA's Chandra X-ray Observatory has detected mysterious objects in the Pinwheel Galaxy, known as M101, emitting unusually low-energy X-rays alongside intense ultraviolet radiation. The findings were released on September 9, 2026, as part of a broader study examining multiple galaxies. Astronomers believe these newly identified objects are unlike previously catalogued X-ray sources. Researchers suggest the discovery could potentially help resolve two longstanding astronomical mysteries, though details remain under investigation.

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SpaceNASA ·

NASA Astronaut Anil Menon to Answer STEM Questions from NH Students Live

NASA astronaut Anil Menon will respond to pre-recorded STEM questions submitted by students in New Hampshire while stationed aboard the International Space Station. The live Earth-to-space call is scheduled for 11:35 a.m. EDT on Thursday, September 24. The session will be streamed publicly on NASA's Learn With NASA YouTube channel. The event is being organized by the McAuliffe-Shepard Discovery Center, located in Concord, New Hampshire.

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SpaceNASA ·

NASA APOD Captures Rare Triple Alignment of Plane, ISS, and Sun

NASA's Astronomy Picture of the Day (APOD) for September 22, 2026 features a striking image of a rare triple alignment involving an aircraft, the International Space Station, and the Sun. The phenomenon occurred by pure chance, with all three objects lining up simultaneously in the sky. APOD, a long-running NASA initiative, publishes a daily astronomy image accompanied by an explanation from a professional astronomer. Such alignments are considered extremely uncommon due to the precise timing and positioning required for all three objects to appear in the same frame.

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