The mysterious mud found on the new Pacific island that intrigues NASA | Nature



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"We looked like children in the middle."

Dan Slayback, a NASA researcher, describes his experience of visiting a new Pacific-born island that has been intriguing since the scientists at the US Space Agency.

The volcanic island was born in the ocean in 2015 after an eruption and is part of the Tongan archipelago.

But why did she attract attention?

The island is particularly interesting because only three people in the last 150 years have been born of eruptions. She is part of the group and has survived for months at the mighty erosion of the ocean. But that's not all.

Clues that "lead to Mars"

Understanding how islands form and change on Earth can give clues to the interaction between volcanic lands and ancient water sources on Mars .

NASA researchers monitor the island by satellite. But the reality on the ground can be very different from images captured remotely.

Slayback and a group of students with whom he was instead saying it. When they landed there, they found a scenario very different from the expected one.

Slayback visited the island with a researcher, scientists and Tongan students from the Sea Education Association, an ocean exploration program for university students based at Woods Hole, in Mbadachusetts, United States. . The group arrived aboard a ship of the badociation.

  Vegetation born from seeds scattered by birds colonizes mud in the new Pacific island - Photo: Dan Slayback <img clbad = "image content-media__ picture" itemprop = "contentUrl" alt = "seeds of vegetation born propagated by the birds colonizes the mud, in the new island Photo: Dan Slayback "data-src =" https://s2.glbimg.com/482Yn3ERdh8lborot16Xzbykz78 "This is the first time that a bird is born in the United States, / 0x0: 976×549 / 984×0 / smart / filters: strip_icc () / i.s3. seeds scattered by birds colonize mud on the new Pacific island – Photo: Dan Slayback

The island is so new that it has no name and that it simply described as HTHH, the name badociation of two neighboring islands, Hunga Tonga and Hunga Ha'apai.

"Most of the island looks like a black gravel – I would not call it sand because the stones are the size of a pea," said Slayback, a scientist at Goddard Space Flight Center, NASA Research Center. in Maryland.

"We used to wear sandals most of the time," he said in a NASA blog.

<img clbad = "image content-media__image" itemprop = "contentUrl" alt = "Scientists have also found thirty-kings de-rocky birds (Onychoprion fuscatus) on the new island – Photo: Dan Slayback "title =" Scientists have also discovered thirty buckwheat (Onychoprion fuscatus) on the new island – Photo: Dan Slayback "data-src =" https: / /s2.gif

Scientists also found thirty kites (Onychoprion fuscatus) on the new island – Photo: Dan Slayback

An owl, elmente residing in the vegetation of nearby islands, appeared on the spot during their

Scientists also found thirty stone-killer seabirds ( Onychoprion fuscatus ) in the depressions of the earth around the crater.

  Students took recordings the new island with GPS units and used drones to map the terrain - Photo: Dan Slayback <img clbad = "image content-media__image" itemprop = "contentUrl" alt = "The students made new island records with GPS units and drones used to map the terrain – Photo: Dan Slayback "title =" Students recorded the new island with GPS units and used drones to map the terrain – Photo: Dan Slayback "data-src =" https://s2.glbimg.com/ 35Av8FTJ9nwAS-Jna39WT 19659013] Students record the new island with GPS units and use drones to map the terrain – Photo: Dan Slayback

holes in the cliffs around the crater are another example. mystery.

"I realized how precious it was to be in person on the island, and once you're there, you can clearly see what's happening on the ground," Slayback said.

"The erosion caused by the rain on the island is much faster than I imagined."

  Erosion by the rain carved cliffs around the crater - Photo: Dan Slayback "title =" Erosion by the rain carved cliffs around the crater - Photo: Dan Slayback "src = "data: image / jpeg; base64, / 9j / 4AAQSkZJRgABAQAAAQABAAD / 2wBDAAMCAgMCAgMDAwMEAwMEBQgFBQQEBQoHBwYIDAoMDAsKCwsNDhIQDQ4RDgsLEBYQERMUFRUVDA8XGBYUGBIUFRT / 2wBDAQMEBAUEBQkFBQkUDQsNFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBT / wgARCAAOABkDASIAAhEBAxEB / 8QAFwAAAwEAAAAAAAAAAAAAAAAABAUGA // EABYBAQEBAAAAAAAAAAAAAAAAAAIBBP / aAAwDAQACEAMQAAABnnmLWFMDdDrN / 8QAHBAAAQUBAQEAAAAAAAAAAAAAAwABAgQFBhUW / 9oACAEBAAEFAh6JUPZssM3QaMV7OgnpBdqmTWtjnyw5r5ca / 8QAGBEBAQADAAAAAAAAAAAAAAAAAQACAxL / 2gAIAQMBAT8BXmd + Bf / EABYRAQEBAAAAAAAAAAAAAAAAAAASE aAAgBAgEBPwG2j // // EACMQAAEDAwMFAQAAAAAAAAAAAAEAAhEDEiEEQUIxNHGBkZP / 2gAIAQEABj8CEDOd91Se3UPbeBzOEJ1VUgnaou4d QL1 + / oq1t48qbpMdSuHxf // EACEQAAICAQIHAAAAAAAAAAAAAAERACExUbEQQZGh0eHx / 9oACAEBAAE / IRGWVNCVt3gOpYUCJUUIoyFcvfWfbeYYFNlml0to4AQS21l + xTi + Gf / aAAwDAQACAAMAAAAQO // the xAAWEQEBAQAAAAAAAAAAAAAAAAABEQD / 2gAIAQMBAT8QMVy0bv / EABcRAAMBAAAAAAAAAAAAAAAAAAABEVH / 2gAIAQIBAT8QTFYf / 8QAHxABAQADAAEFAQAAAAAAAAAAAREAITFREEFhcYGR / 9oACAEBAAE / EEZ fjBsOnZdjpHhzYoegAhB0jROjrxh4ZEjRgS1GI / HokLMDCoSuvp3mWZhBWprR21XhvfsYcXQMOCJsfIN7TPj / AKZ // 9k = "/> <picture itemscope= <img clbad =" image content-media__image "itemprop =" contentUrl "alt =" The erosion caused by rain has carved the cliffs around the crater – Photo: Dan Slayback "title =" Erosion by the rain carved cliffs around the crater – Photo: Dan Slayback "data-src =" https://s2.glbimg.com/8t2P5kDUFadwGasxoHfglWDkaCQ=/0x0:976×549 / 984×0 / smart / filters: strip_ic () Erosion caused by rain carved cliffs around the crater – Photo: Dan [1] [1] [2] [3] [4] [5] [6] [7] [8] [10] Slayback

Researchers and students collected rock samples from the Island and measured the terrain using drones and GPS units.

Back in the Goddard Center's lab, Slayback is now working on a 3D model of the island to determine its volume.

The scientist hopes to return to the site next year to find clues to decipher some of its many mysteries.

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