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By NewsGram Staff Writer

Washington: Pluto’s lattest sharp images have revealed perplexed variety of surface features that has left scientific community baffled because of their complexity and range.



Taken from NASA’s New Horizons spacecraft, the images reveal new features as diverse as possible dunes, nitrogen ice flows that apparently oozed out of mountainous regions onto plains, and even networks of valleys that may have been carved by material flowing over Pluto’s surface.

“Pluto is showing us a diversity of land forms and complexity of processes that rival anything we have seen in the solar system,” said New Horizons principal investigator Alan Stern from Southwest Research Institute (SwRI), Boulder, Colorado.

New Horizons has begun its year-long download of new images and other data.

They show large regions that display chaotically jumbled mountains reminiscent of disrupted terrains on Jupiter’s icy moon Europa.

“The surface of Pluto is every bit as complex as that of Mars,” added Jeff Moore from NASA’s Ames Research Center in California.

The randomly jumbled mountains might be huge blocks of hard water ice floating within a vast, denser, softer deposit of frozen nitrogen within the region informally named Sputnik Planum, he explained.

New images also show the most heavily cratered — and thus oldest — terrain yet seen by New Horizons on Pluto next to the youngest, most crater-free icy plains.

There might even be a field of dark wind-blown dunes, among other possibilities.

“Seeing dunes on Pluto — if that is what they are — would be completely wild, because Pluto’s atmosphere today is so thin,” noted William B. McKinnon from Washington University-St Louis.

Images returned in the past days have also revealed that Pluto’s global atmospheric haze has many more layers than scientists realized.

The haze actually creates a twilight effect that softly illuminates night-side terrain near sunset, making them visible to the cameras aboard New Horizons.

The New Horizons spacecraft is now more than five billion kms from Earth and more than 69 million kms beyond Pluto.

The spacecraft is healthy and all systems are operating normally, NASA reported.

(with inputs from IANS )


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