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Latest Pluto surface images baffle scientists

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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.pluto

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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NASA Making a ‘Rigorous’ Search for Vikram with Fresh Lunar Pictures

LRO will next fly around the region on November 10 and it will be another good opportunity with favourable lighting conditions for pictures, Petro said

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nasa, trump, moon mission
NASA also plans to build a space outpost in lunar orbit that can relay astronauts to the lunar surface by 2024. VOA

BY ARUL LOUIS

NASA’s Lunar Reconnaissance Orbiter (LRO) has taken a fresh set of pictures under better lighting conditions of the area where the Indian moon lander Vikram likely ended up and experts will be making a rigorous search for it, according to LRO Project Scientist Noah Petro.

“The lighting conditions on Monday were much more favourable, (with) less shadow in the region” compared to last month, Petro told IANS on Wednesday.

Scientists were not able to locate the Vikram in the pictures taken during the LRO’s last flyover on September 17, when it was dusk on the moon and the long shadows that covered much of the terrain may be hidden in it, NASA said at that time.

“We flew over the landing site on Monday and the camera team is still evaluating images, so we should know more in the next few days,” Noah said.

Chandrayaan 2, India, Moon
Chandrayaan-2, India’s ambitious expedition to the moon’s south pole, made headlines globally even as Vikram, the lander of the mission, lost contact with the orbiter. Pixabay

“We will do a careful search, we will be as rigorous as possible” and “we will find out soon” what happened to the Vikram moon lander, said Petro, who is based at the Goddard Space Flight Center in Maryland near Washington.

“This is a large area, we don’t know exactly where we have to look. So it will take some time to search the images because we are looking over a very, very large area,” he added.

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Vikram lost contact with the Indian Space Research Organisation (ISRO) following its launch from Chandraayan 2 moon orbiter on September 6 and likely landed in an area around the moon’s South Pole.

LRO will next fly around the region on November 10 and it will be another good opportunity with favourable lighting conditions for pictures, Petro said. (IANS)