NASA Spots Iceberg-like ‘Hills’ Floating on Pluto’s Nitrogen Sea

Hills of water ice on Pluto ‘float’ in a sea of frozen nitrogen and move over time like icebergs in Earth’s Arctic Ocean—another example of Pluto’s fascinating geological activity. (PHOTO CREDIT: NASA)
Hills of water ice on Pluto ‘float’ in a sea of frozen nitrogen and move over time like icebergs in Earth’s Arctic Ocean—another example of Pluto’s fascinating geological activity. (PHOTO CREDIT: NASA)

NASA researchers say they have have spotted iceberg-like “hills” floating on a sea of frozen nitrogen on Pluto.

The hills, which are seen in the “Sputnik Planum” plane inside the so-called “heart,” are from one to several kilometers across, according to photos beamed back to Earth from the New Horizons probe.

NASA believes the hills are made of water ice because water is less dense than nitrogen.

The hills, NASA says, move much like Earth’s icebergs and are “likely fragments of the rugged uplands that have broken away and are being carried by the nitrogen glaciers into Sputnik Planum.”

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SOURCE: VOA News