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APOD Science APOD APOD: 2026 November 4 – The… 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. The Not-So-Hidden … Read more

Earth Observatory Science Earth Observatory Before the Dawn in America’s… Earth Earth Observatory Image of the Day EO Explorer Topics All Topics Atmosphere Land Heat & Radiation Life on Earth Human Dimensions Natural Events Oceans Remote Sensing Technology Snow & Ice Water More Content Collections Global Maps World of Change Articles Earth Matters Blog Blue … Read more

Retired Army Sgt. 1st Class Pete Ferrell’s 33-year military career began in Vietnam as a Huey crew chief in 1970 and finished with a 2010 Afghanistan deployment. Source: www.war.gov

Credit: NASA NASA selected three companies on Wednesday to perform work to develop Ka-band space relay capability concepts that are compatible with current missions in space, ensuring service continuity for existing spacecraft without requiring modifications to their onboard systems. Through this work, NASA will aim to acquire end-to-end solutions that include space, ground, launch, operations, … Read more

This is an image from NASA’s Hubble Space Telescope of NGC 4449, one of the dwarf galaxies in the Galaxies Losing Oxygen via Winds (GLOW) study. Researchers found that dwarf galaxies can hold onto only a small fraction of the oxygen made by their stars. NASA, ESA, Hubble Heritage–ESA/Hubble Collaboration, Alessandra Aloisi (STScI, ESA) This … Read more

For more information, contact Joel W. Sills, Langley Research Center, [email protected]. Download the PDF version An instrumented hammer test does not require an idealized single half-sine waveform. When the complete force and response are measured accurately, crest ripples and separated contacts remain known inputs. Force shape changes excitation, but does not inherently invalidate the record. … Read more

For more information, contact Joel W. Sills, Langley Research Center, [email protected]. Download PDF here Chip resistors are widely used in NASA projects, yet cases of alumina substrate cracking during environmental testing are rare. Two instances of thick-film chip resistor cracking were observed during thermal cycling after vibration, with fractures occurring across the short axis due … Read more

NASA astronaut and Expedition 74 flight engineer Anil Menon is photographed on July 17, 2026, servicing a spacesuit and its components inside the International Space Station’s Quest airlock. Credit: NASA/Jessica Meir Students across the country will have the opportunity to connect directly with the International Space Station during a live, interactive in-flight call with NASA … Read more

Earth Observatory Science Earth Observatory The Pacific’s Busy Storm Season Earth Earth Observatory Image of the Day EO Explorer Topics All Topics Atmosphere Land Heat & Radiation Life on Earth Human Dimensions Natural Events Oceans Remote Sensing Technology Snow & Ice Water More Content Collections Global Maps World of Change Articles Earth Matters Blog Blue … Read more

APOD Science APOD APOD: 2026 November 3 –… 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. Comet PanSTARRs and … Read more