5 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) Yi Lin, SPEARS testing and research lead at NASA Langley, holds one of the small coin-cell batteries that had just undergone thermal vacuum testing. NASA/Ryan Hill If you’ve ever had your car start sluggishly, or not at all, on a particularly frigid winter morning,…
NASA/John Kraus Sunlight illuminates the exhaust plumes of a SpaceX Falcon 9 rocket carrying the company’s Dragon spacecraft on Oct. 13, 2026. This visual phenomenon is known as a “jellyfish”; it happens near sunrise or sunset when the exhaust plume from the rocket becomes brightly illuminated, creating a glowing shape resembling a jellyfish. The mission…
X-ray: NASA/CXC/INAF-IRA/A. Botteon et al.; Infrared: UKIDSS-GPS ; Radio: ASTRON/LOFAR; Image processing: NASA/CXC/SAO/N. Wolk Astronomers have used NASA’s Chandra X-ray Observatory to break down the cause of a remarkable formation of radio waves they have nicknamed the “Treble Clef” because its distinct shape strongly resembles the musical symbol. The researchers discovered the Treble Clef is…
NASA astronaut Jessica Watkins assists NASA astronaut Luke Delaney as he practices suiting up in a spacesuit in an International Space Station airlock simulator on May 5, 2026, at the agency’s Johnson Space Center Space Vehicle Mockup Facility in Houston. Credit: NASA Students in Florida will hear from NASA astronauts Jessica Watkins and Luke Delaney…
Earth Observatory Science Earth Observatory Hurricane Simon Lurks Off the… 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…
Earth Observatory Science Earth Observatory An Impact Structure With Legs 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…
APOD Science APOD APOD: 2026 October 13 –… 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. OriginalAnnotated Desert Stairway…
A SpaceX Falcon 9 rocket and Dragon spacecraft launched on Tuesday, Oct. 13, 2026, from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida as part of the company’s 35th Commercial Resupply Services mission to the International Space Station for NASA. Credit: NASA NASA’s SpaceX 35th commercial resupply mission lifted off at…
4 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) Engineers and technicians use a crane to position Voyager Technologies’ Griffin-1 lunar lander within the 25-Foot Space Simulator at NASA’s Jet Propulsion Laboratory on Aug. 31. The spacecraft recently completed a series of rigorous environmental tests at JPL ahead of launch to the Moon…
For more information, contact Joel W. Sills, Langley Research Center, [email protected] Download the PDF version Complex mode shapes can emerge in a linear structure even when overall damping is low. This behavior can occur when two structural modes are closely spaced in frequency and are coupled through nonproportional damping. As the damping interaction increases, the…
