Vega Island’s bare ice shows why the season of a satellite image matters
NASA’s two views reveal a striking surface difference, but they are not a same-season annual comparison.
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Earth observation
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Iceberg A-81 slows near South Georgia, where the unseen seabed matters
A new satellite account follows the berg’s route from the Brunt Ice Shelf. Slower movement is not yet proof of permanent grounding.
Landsat shows the volcanic framework behind America’s newest national park
The July image, published this week, reveals rock and vegetation patterns rather than individual pinnacles. Chiricahua’s protection began a century ago.
Plants beneath the Barnes Ice Cap expose a climate reversal measured in centuries
Dating preserved vegetation helps reconstruct two millennia of ice expansion and its retreat. The finding does not make warming a benefit.
PACE is reading autumn through leaf chemistry, not just the color of a forest
NASA’s hyperspectral maps distinguish a pigment ratio from an ordinary photograph. Ground observations help explain what the signal means.
NASA’s POWER data links weather to the decisions behind an energy system
A Virginia partnership connects Earth observations with planning. Cooling-degree maps are useful evidence, but they are not a forecast of an electricity bill.
The Pacific looks like 1997 in NASA’s new El Niño comparison. The weather need not repeat
Satellite sea-height measurements reveal a striking similarity across decades. They are evidence of ocean conditions, not a local winter forecast.
Suomi NPP’s final job is to leave orbit deliberately
NOAA plans a December descent for the weather satellite. Its retirement shows why an end-of-life maneuver belongs in the mission design.
NASA’s CASALS lidar fills the space between the tracks. The next step is still airborne
A newly published report explains wavelength steering and forest measurements from a 2024 flight. A space-ready instrument remains future work.