The first person to photograph a single snowflake captured these images. Wilson A. Bentley used a microscope with his camera—plus years of trial and error—to get a photo of an individual snowflake in ...

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Photomicrograph in plane-polarized light of parallel planar fractures (upper left to lower right) in quartz crystal from an impact-breccia deposit ~20 km southeast of the center of the proposed crater ...

This is a photomicrograph of a small, thin section of komatiite lava. The "spinifex texture" is a hallmark and considered unequivocal evidence of their ancient origin as molten rock extruded from deep ...