


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

El Niño Is Underway
4 min read
Satellite observations of sea surface height indicated that the 2026 event continued to strengthen in early June.
Jun 18, 2026

Low Water at San Carlos Reservoir
4 min read
Drought and water releases drained the Arizona reservoir to levels that have led to widespread fish deaths.
Jun 17, 2026

Nebraska’s Wide, Rolling Domain
3 min read
The Nebraska Sandhills—the largest system of sand dunes in the Western Hemisphere—stretch across about one-quarter of the state.
Jun 16, 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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