"This object was changing its brightness by a factor of three or four -- it was just enormously variable, " Tholen said.

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Kepler flags exoplanet candidates via the transit method, which looks for dips in a star's brightness caused by an object crossing in front of it.

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Textures are well-defined-like water rippling in a trough-and the changes in definition and brightness as you move in relationship to an object are impressive.

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Observations made in Europe have failed to see any variations in brightness that might be expected from a slowly spinning metallic object.

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