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Aerial view of fractured sea ice floating in the Arctic Ocean. Large white ice sheets are broken into irregular shapes, with deep blue melt ponds and dark open water channels visible between them.
NASA/Rachel Tilling

Sea ice is frozen seawater that floats in the ocean. This photo, taken from NASA’s Gulfstream V Research Aircraft on July 21, 2022, shows Arctic sea ice in the Lincoln Sea north of Greenland.

This image is the NASA Science Image of the Month for September 2025. Each month, NASA’s Science Mission Directorate chooses an image to feature, offering desktop wallpaper downloads, as well as links to related topics, activities, and games.

Text and image credit: NASA/Rachel Tilling

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