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Pluto’s icy ‘spider’

7 April 2016 Astronomy Now

Sprawling across Pluto’s icy landscape is an unusual geological feature that resembles a giant spider. This enhanced colour image, obtained by NASA’s New Horizons spacecraft on 14 July 2015, consists of at least six extensional fractures (arrowed) converging to a point near the centre. Curiously, the spider’s “legs” expose red deposits below Pluto’s surface.

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View Pluto’s bladed terrain in 3-D

2 April 2016 Astronomy Now

One of the strangest landforms spotted by NASA’s New Horizons spacecraft when it flew past Pluto was the “bladed” terrain formally named Tartarus Dorsa. The blades reach hundreds of feet high and are typically spaced a few miles apart. No geology degree is necessary to see why the terrain is so interesting — just grab your red and green 3-D spectacles.