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  • Countdown Begins for Artemis II Wet Dress Rehearsal

    The countdown for the Artemis II wet dress rehearsal is underway at NASA’s Kennedy Space Center in Florida. The countdown clock began at 8:13 p.m. EST, or L-48 hours, 40 minutes before the opening of a simulated launch window at 9 pm. Mon, Feb. 2. The test is expected to go until approximately 1 a.m. […]

  • NASA Earth Energy Instrument Completes Testing, Ready for Delivery

    Three people in clean room suits stand around a piece of complex intrumnetation with wires and electronics exposed

    NASA’s Libera instrument, which is designed to maintain the global data record of Earth’s radiation budget, has successfully completed comprehensive environmental testing. This critical milestone included thermal vacuum tests that simulate the expected space temperature and environments that Libera will experience during its mission. The Libera instrument will fly on Joint Polar Satellite System-4 (JPSS-4), […]

  • NASA Updates Artemis II Wet Dress Rehearsal, Launch Opportunities

    NASA is targeting Monday, Feb. 2, as the tanking day for the upcoming Artemis II wet dress rehearsal at the agency’s Kennedy Space Center in Florida, as a result of weather. With this change, the first potential opportunity to launch is no earlier than Sunday, Feb. 8. Over the past several days, engineers have been […]

  • NASA Missions Help Identify What Powers Auroral ‘Space Battery’

    An arc of green aurora bends over the limb of Earth, which appears cloudy. A faint red haze appears above the green auroral arc against the black background of space.

    Scouring archived observations from NASA missions, scientists may have solved a mystery about what powers a type of aurora called auroral arcs. The answer, they say, is space waves. From the ground, auroral arcs look like green, glowing curtains of light sweeping across the night sky. From space, they appear as thin, green lines — or arcs — slicing across the […]

  • NASA’s Galileo Mission Points to Ammonia at Europa, Recent Study Shows

    A high-resolution scientific graphic from NASA illustrates the detection of ammonia on the surface of Jupiter’s moon, Europa. On the left, a full-disk view of the icy moon is shown against a black starfield, with a white rectangular box highlighting a specific region near the equator. This box zooms into a large, detailed grayscale map on the right, which reveals a complex landscape of crisscrossing linear ridges and fractured "chaos terrain." Overlaid on this topographical map are pixelated data clusters: purple areas indicate the presence of ammonia, while vibrant red pixels mark the highest concentrations. These detections are primarily concentrated along the geologically active ridges and disrupted ice, suggesting that the ammonia may be surfacing from the moon's subsurface liquid ocean.

    New analysis of decades-old data has turned up a significant result: the first discovery of ammonia-bearing compounds on the surface of Jupiter’s moon Europa. Ammonia is a nitrogen-bearing molecule, and nitrogen — like carbon, hydrogen, and oxygen — is key to life as we know it. As the first such detection at Europa, the finding […]

  • NASA’s SpaceX Crew-12 Begins Quarantine for Space Station Mission

    The four crew members of NASA’s SpaceX Crew-12 mission began their routine two-week quarantine on Wednesday at NASA’s Johnson Space Center in Houston ahead of their upcoming launch to the International Space Station. The earliest opportunity for Crew-12 to launch to the orbital complex is 6 a.m. EST Wednesday, Feb. 11, from Space Launch Complex 40 at […]