Satellite imagery

Nikumaroro Atoll : Image of the Day

Today’s caption is the answer to the March 2018 puzzler. It is one of the most famous patches of coral outside of the Great Barrier Reef. Stretching a mere 7.5 kilometers (4.7 miles) by 2.5 kilometers (1.6 miles) and surrounded by deep ocean, it is barely a speck on world maps. Though uninhabited today, Nikumaroro atoll is noteworthy for someone ...

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Spring Fires in Kaliningrad : Image of the Day

Sandwiched between Lithuania and Poland, Kaliningrad is a small piece of Russia—about half the size of Rhode Island—on the Baltic Sea. Once claimed by Prussia, Kaliningrad was annexed by the Soviet Union during World War II and has since remained under Russian control. As this natural-color satellite image shows, the borders of Kaliningrad reveal themselves in an unexpected way—fire activity. ...

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Saharan Dust Makes Orange Snow : Image of the Day

Maybe this is what it would be like to ski on Mars. In late March 2018, the people of Eastern Europe and Russia found their snow cover had a distinctly orange tint. The color came from vast quantities of Saharan dust that was picked up by strong winds, lofted over the Mediterranean Sea, and deposited on Bulgaria, Romania, Moldova, Ukraine, ...

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