A new LSU research study suggests clustered pits in the Pioneer Terra region on Pluto are related to the dwarf planet's suprising robust atmosphere. The pits resemble gas pockmarks on Earth where methane seeps from the subsurface. These pits may supply atmospheric methane on Pluto.

· · 来源：tutorial资讯

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The objects have been taken to Cardiff University's lab. Conservator Nicola Emmerson is painstakingly removing the dirt of the dig from an ornate copper brooch.

George Timms

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