Tropical Storm Hanna, left, and Josephine
Tropical Storm Hanna, left, and Josephine. Image credit: NASA/JPL
While Tropical Storm Hanna moves toward the Bahamas, in the eastern Atlantic, her younger sister, Tropical Storm Josephine, begins her westward trek in these Sept. 3 infrared images from NASA's Aqua spacecraft.

To learn more, visit the NASA hurricane site at

http://www.nasa.gov/mission_pages
/hurricanes/main/index.html

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