NASAのインスタグラム(nasa) - 9月28日 02時32分

The origins of giant knife blades of ice found on Pluto by our New Horizons spacecraft were a mystery to scientists…but not any more! They now believe the structures are made almost entirely of methane ice, likely formed as a specific kind of erosion that wore away their surfaces. These jagged geological ridges are found at the highest altitudes on Pluto’s surface, near its equator, and can soar many hundreds of feet into the sky – as high as a New York City skyscraper.

Similar structures can be found in high-altitude snowfields along Earth’s equator, though on a very different scale than the blades on Pluto. The terrestrial structures, called penitentes, are snow formations just a few meters high, with striking similarities to the vastly larger bladed terrain on Pluto. Swipe to see the Earth comparison!

Image 1 Credit: NASA/JHUAPL/SwRI
Image 2 Credit: Wikimedia Commons/ESO

#nasa #space #pluto #newhorizons #spacecraft #flyby #plutoflyby #ice #jaggad #terrain #structures #equator #solarsystem #earth #formations #dwarfplanet #picoftheday #skyscraper

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