


Earth Observatory
NASA's Earth Observatory brings you the Earth, every day – the images, stories, and discoveries about the environment, Earth systems, and climate that emerge from NASA research.
Image of the Day

Sensing the Poles’ Hidden Heat
3 min read
New animations from NASA's PREFIRE mission reveal two years of seasonal temperature swings at the Arctic and Antarctic.
Aug 7, 2026

How the Tide Turns at the Mouth of the Elbe
4 min read
The ocean’s ebbs and flows reveal dynamic tidal flats and a well-traveled shipping route along the coast of Germany.
Aug 6, 2026

The Paradox of Lençóis Maranhenses National Park
5 min read
The coastal dune field in Brazil looks like a desert but fills with freshwater lagoons every year.
Aug 5, 2026
What is an El Niño?
If you want to understand how interconnected our planet is—how patterns and events in one place can affect life half a world away—study El Niño.
Learn more about What is an El Niño?Get the Earth Observatory in your Inbox
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