View Full Version : Closeup Look at Martian Soil

2005-Sep-08, 08:26 PM
SUMMARY: NASA's Opportunity rover took a close look at the Martian soil near its landing site yesterday with its microscope, and controllers released the first colour images today. What's unusual about the soil is just how many spherical-shaped particles there are. There are only a few processes which can create this shape of particles, such as the gentle rolling at the bottom of an ocean. It's possible for a volcano or asteroid impact to create spherical particles; globs of lava can freeze in mid-air as they're ejected. The largest pebble in this image is approximately 3 mm across.

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