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Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

See Explanation. Clicking on the picture will download the highest resolution version available.

Snowstorm on Planet Earth

Explanation: Earth is an ocean planet . From low Earth orbit, the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) instrument onboard NASA's SeaStar spacecraft globally maps ocean color, tracking changes in the climate and biosphere of our water world . Richly detailed SeaWiFS images can also follow color changes in Earth's landmasses as illustrated in this close-up picture of the planet. Taken on January 27, it covers the Great Lakes region and Atlantic coastal areas of the North American continent. The space-based perspective splendidly reveals the extent of fractal white seasonal solid phase H20 recently sprinkled over the Northeastern and Midatlantic US . Unanticipated and intense, the snowstorm delighted school children but caused serious disruptions in many locales.

Date January 31, 2000
Credit Credit : SeaWiFS Project , GSFC , NASA
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.