Some of the sharp variations across Pluto's surface detected in the Hubble images may potentially be caused by such topographic features as basins, and fresh impact craters (as found on Earth's Moon).
(the sharp variations across Pluto's surface; detected; L:in the Hubble images) (Some of the sharp variations across Pluto's surface; may potentially be caused; by such topographic features as basins)
the sharp variations across Pluto's surface Some of the sharp variations across Pluto's surface
detected may potentially be caused
L:in the Hubble images
by such topographic features as basins