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October 20, 2026 Weekly News Latest Images of the Day View the Image of the Day archive The Human Fingerprint on Earth’s Water Cycle Human activities have become intertwined with how water is distributed across the continents. A new study brings their effects into sharper focus. Autumn Paints Poland’s Bieszczady Mountains Fall color covers the forested slopes of Bieszczady National Park, while patches of polonina, a type of high-mountain meadow, have turned tan. Isaias Dims the Gulf Coast High-definition images of nighttime lights show where the hurricane knocked out power along the Florida Panhandle and how quickly the lights came back. Fires Arrive in the Amazon Rainforest During El Niño, a cascade of fires across the tropics begins in equatorial Asia and continues in the central and eastern Amazon. Hurricane Simon Lurks Off the Mexican Coast Though it remained offshore, the storm lashed coastal areas with high winds and flooding—and produced remarkable rippling patterns in the upper atmosphere. More from NASA Earth Science NASA Satellites Observe Historic 2026 El Niño A phenomenon rarer than a solar eclipse and more powerful than any single storm system is unfolding this fall, and NASA is tracking it closely. Re-Connecting on the North Slope: NASA FORTE’s Summer 2025 Pre-Field Visit In July 2025, NASA’s Earth Venture Suborbital Mission FORTE (Frontlines of Rapidly Transforming Ecosystems) went into action on the North Slope of Alaska. NASA Earth Observatory Where every day is Earth day Visit science.nasa.gov/earth/earth-observatory Follow NASAEarth   NASA Earth Science Division