Earth Observatory

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The Battle for Sullivan’s Island

5 min read

Marshy, sandy terrain and an impassable inlet helped colonial forces repel British forces during a pivotal battle on the barrier…

Jun 26, 2026

A Turquoise Tint for the Black Sea

3 min read

Phytoplankton added a milky blue hue to the waters of the Black Sea and nearby waterways in spring and summer…

Jun 25, 2026

Playing the Moon Game 

4 min read

Apollo astronauts previewed their roles as lunar field geologists in Alaska’s Valley of Ten Thousand Smokes.

Jun 24, 2026