{"id":283612,"date":"2021-06-23T17:25:54","date_gmt":"2021-06-23T14:25:54","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/venus-found-to-be-more-geologically-active-than-previously-believed\/"},"modified":"2021-06-23T17:25:54","modified_gmt":"2021-06-23T14:25:54","slug":"venus-found-to-be-more-geologically-active-than-previously-believed","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/venus-found-to-be-more-geologically-active-than-previously-believed\/","title":{"rendered":"#Venus found to be more geologically active than previously believed"},"content":{"rendered":"

“#Venus found to be more geologically active than previously believed<\/strong>”
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Planetary scientists\u00a0have reportedly found that the crust of Venus is fragmented and that its surface shows evidence of\u00a0tectonic motion.<\/p>\n

The findings could indicate that the second planet from the sun \u2013 sometimes called the\u00a0Earth\u2019s\u00a0\u201ctwin\u201d \u2013 is still geologically\u00a0active as well as potentially provide further insight into tectonic activity on exoplanets and at home.<\/p>\n

In a summary of the research, which was released Monday and\u00a0has been published in the PNAS (Proceedings of the National Academy of Sciences)<\/a>, the international authors wrote that they had identified a pattern of tectonic deformation suggesting that many of the hellish planet\u2019s lowlands have fragmented into \u201cdiscrete crustal blocks,\u201d which have moved relative to each other in the geologically recent past.\u00a0<\/p>\n

\u201cThese motions may be the result of mantle convection and, if so, constitute a style of interior\u2013surface coupling not seen elsewhere in the inner\u00a0Solar System\u00a0except for continental interiors on Earth,\u201d they said. \u201cVenus\u2019 fragmented, mobile lithosphere may offer a framework for understanding how tectonics on Earth operated in the Archean.\u201d<\/p>\n

The\u00a0Archean Eon<\/a>\u00a0is the earlier of two divisions of Precambrian time and the period when life first formed on Earth about 4 billion years ago.<\/p>\n

The lithosphere<\/a>\u00a0is the rigid outer layer of the Earth, including the crust and solid outermost layer of the upper mantle and it is broken into separate rigid blocks or plates.<\/p>\n

While Venus had long been presumed to possess a \u201cglobally continuous\u201d lithosphere, the planet\u2019s surface has been extensively deformed. The extent and scale of its tectonic expression had remained unclear.<\/p>\n

\u201cWhile we can use high-resolution cameras to study objects like Mars or the moon, the geology of Venus is difficult to study because of its thick, opaque clouds. Instead, we need to use radar, which has much lower resolution (Magellan radar had a resolution of hundreds of meters),\u201d study co-author and Baylor University planetary physicist Peter James said in a Tuesday email to Fox News<\/a>.<\/p>\n

James provided calculations of the various mechanisms that could be responsible for the force driving the geologic activity, using\u00a0data\u00a0from\u00a0NASA\u2019s Magellan\u00a0mission<\/a>\u00a0regarding Venus\u2019 gravity field to demonstrate that viscous mantle flow is strongly coupled to the crust \u2013 something that hadn\u2019t been demonstrated on a global scale previously,\u00a0according to a Baylor news release<\/a>.<\/p>\n

The team studied radar images from Magellan to map the planet\u2019s lowlands and modeled the deformation to reach their conclusions.<\/p>\n

Study lead and co-corresponding author\u00a0Paul Byrne<\/a>, an associate professor of planetary science<\/a> at North Carolina State University, told Fox News in an interview on Tuesday that he believes a lot of people are moving away from the idea that the planet sits under a solid shell and there had been \u201ctantalizing bits of evidence of volcanic activity.\u201d\u00a0<\/p>\n

In examining the ridges and grooves on Venus that outline these blocks and the whole edge of a block, Byrne said the blocks app<\/a>ear to have \u201cshimmied\u201d and rotated.\u00a0<\/p>\n

The scientist compared tectonics on Venus to pack ice that shifts laterally relative to one another<\/p>\n

Additionally, some deformation on the planet\u2019s surface looks \u201csuper\u201d geologically young.<\/p>\n

\u201cThe idea is some of these fractures are new. Some of this jostling has recently happened, so why isn\u2019t it happening today?\u201d he said. \u201cAnd, that\u2019s where things like VERITAS can come in and EnVision.\u201d\u00a0<\/p>\n

In May, at NASA\u00a0Administrator Bill Nelson\u2019s first State of NASA address<\/a>, the agency\u00a0announced two groundbreaking missions<\/a>\u00a0to Venus after decades of focusing efforts elsewhere.\u00a0<\/p>\n

VERITAS (Venus Emissivity, Radio Science, InSAR, Topography and Spectroscopy) will examine the surface in the hopes of determining why the planet \u201cdeveloped so differently than Earth,\u201d while DAVINCI+ (Deep Atmosphere Venus Investigation of Noble gases, Chemistry and Imaging) will study the planet\u2019s atmosphere, which could shed light on whether Venus once had an ocean.<\/p>\n

Last week, the\u00a0European Space Agency (ESA) announced<\/a>\u00a0it had selected the EnVision Venus orbiter with a similar goal.<\/p>\n

Byrne said comparing new data with previous research like what was acquired in the decades-old Magellan mission would help build on the \u201coverall picture\u201d that indicates \u201cVenus is probably alive and its heart is beating today.\u201d\u00a0<\/p>\n

\u201cIf we\u2019re right \u2013 and I think we are \u2013 I want other people to go and \u2026 there\u2019s still something to pull out of Magellan but we need new data, both high resolution and the kind of data we\u2019ll get from Magellan or from Mission VERITAS is going to show us stuff we didn\u2019t even think to look for,\u201d he added. \u201cI mean, it\u2019s going to be amazing.\u201d\u00a0<\/p>\n

\u201cImagine if you had to study the geology of Earth from satellite imagery, but each pixel was the size of a football stadium. That\u2019s roughly the resolution of radar images that we currently have at Venus. You would have a hard time seeing even some major fault lines like the San Andreas,\u201d James said.\u00a0<\/p>\n

\u201cVERITAS will give us new imagery with house-sized pixels, about 10 times better than what we currently have. This is exciting because we will almost certainly find new faults to refine our understanding of Venus\u2019 tectonics,\u201d he remarked.<\/p>\n

Byrne highlighted that seeing things under new resolution and with fresh eyes after so many years would be extremely important to understanding more, noting that bands of structures and belts on the planet with side-to-side motion had yet to have been recognized and that his team had run mantle computer models in order to approximate how strong Venus\u2019 crust is.<\/p>\n

In doing so, he said that \u2013 like Earth\u2019s plates shift due to interior motion \u2013 Venus\u2019 fragments were shifting but with a different style.<\/p>\n

\u201cBut the actual process was, we were a group already working on projects together and we would spend time looking at these images going, \u2018Well, that\u2019s weird,’\u201d joked Byrne.<\/p>\n

The next steps, according to Byrne, are to continue detailed mapping of particular locations and even more extensive computer modeling.\u00a0<\/p>\n

But, he said, the most important thing is to devise a set of questions to address the new\u00a0mission data.\n <\/p><\/div>\n

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Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

“#Venus found to be more geologically active than previously believed” Planetary scientists\u00a0have reportedly found that the crust of Venus is fragmented and that its surface shows evidence of\u00a0tectonic motion. The findings could indicate that the second planet from the sun \u2013 sometimes called the\u00a0Earth\u2019s\u00a0\u201ctwin\u201d \u2013 is still geologically\u00a0active as well as potentially provide further insight…<\/p>\n","protected":false},"author":1,"featured_media":283613,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/nypost.com\/wp-content\/uploads\/sites\/2\/2021\/06\/venus-1-1.jpg?quality=90&strip=all&w=1200","fifu_image_alt":"","footnotes":""},"categories":[70897],"tags":[110108,76970,70765,61514,67907,5019],"class_list":["post-283612","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-6-23-21","tag-geology","tag-planets","tag-research","tag-science","tag-space"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/283612","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=283612"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/283612\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/283613"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=283612"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=283612"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=283612"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}