Ice Stars

Like distant galaxies amid clouds of interstellar dust, chunks of sea ice drift through graceful swirls of grease ice in the frigid waters of Foxe Basin near Baffin Island in the Canadian Arctic. Sea ice often begins as grease ice, a soupy slick of tiny ice crystals on the ocean's surface. As the temperature drops, grease ice thickens and coalesces into slabs of more solid ice.

Image date: 4 August 2002
Source: Landsat 7

Part of the US Geological Survey's "Earth as Art 3" collection of images taken by the Landsat 5 and Landsat 7 satellites.

Since 1972, Landsat satellites have collected from space information about Earth’s continents and coastal areas, enabling scientists to study many aspects of the planet and to evaluate changes caused by both natural processes and human practices. This image was created by visualizing both visible-light and infrared data in colors visible to the human eye; band combinations and colors were chosen to optimize their dramatic appearance.

Credit: Geological Survey [source has higher resolution version]

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