Set as Homepage - Add to Favorites

日韩欧美成人一区二区三区免费-日韩欧美成人免费中文字幕-日韩欧美成人免费观看-日韩欧美成人免-日韩欧美不卡一区-日韩欧美爱情中文字幕在线

【couple had sex in dominos video】Enter to watch online.A NASA rover just exposed something on Mars that eluded orbiters

A NASArover taking rock samples on couple had sex in dominos videoMarshas uncovered a plentiful mineral that was invisible to orbiters studying the Red Planet from space.

Scientists say the discovery of siderite, a type of iron carbonate, could be crucial evidence to support the theory that Mars once had a thick carbon dioxide-rich atmosphere, allowing a warm enough environment to support oceans, lakes, and streams.  

Curiosity, a car-sized lab on six wheels, performed a chemical analysis of four rock samplesdrilled at different elevations of Mount Sharp, a mountain it has been exploring within Gale Crater. Three of the samples showed considerable amounts of siderite. Another sample, which had no significant traces of siderite, contained other iron-rich minerals that can form as siderite breaks down. 


You May Also Like

This iron carbonate mineral is known to form on Earth under specific chemical conditions involving water, iron, and carbon dioxide. The study, published in the journal Science, suggests more carbon is stored in the Martian crust than previously thought. And if similar carbonates exist in other sulfate-rich regions, they could represent a hidden trove of Mars’ ancient atmosphere.

"The discovery of abundant siderite in Gale Crater represents both a surprising and important breakthrough in our understanding of the geologic and atmospheric evolution of Mars," said Benjamin Tutolo, lead author of the paper, in a statement.

SEE ALSO: These scientists think alien life best explains what Webb just found Curiosity rover taking a selfie on MarsNASA's Curiosity rover snaps a selfie image on lower Mount Sharp in Gale crater in August 2015. Credit: NASA / JPL-Caltech / MSSS

The results contribute to mounting evidence that ancient Mars had the right chemical and environmental conditions not only to have liquid water but also to trap and cycle carbon in the air — factors that may speak to the planet’s past habitability.

Mashable Light Speed Want more out-of-this world tech, space and science stories? Sign up for Mashable's weekly Light Speed newsletter. By clicking Sign Me Up, you confirm you are 16+ and agree to our Terms of Use and Privacy Policy. Thanks for signing up!

Scientists have had a long-standing theory that Mars used to have surface water. But for that to happen, the planet also would have needed to be warmer, with higher air pressure. That has led them to believe that though Mars' atmosphere is extremely thin today, it must have been thick and carbon dioxide-rich in the past. 

Volcanoescould have released large amounts of carbon dioxide into the air. Over time, some of that gas escaped into space, but enough probably stayed to support lakes and rivers. 

Over the past three decades, researchers have found lots of evidence that water flowed on ancient Mars. But up until now there's been a missing puzzle piece for the atmosphere within the rock record: Carbon dioxide in the air and water almost certainly would have reacted with rocks to create various carbonate minerals, so where are they?


Related Stories
  • Scientists found huge beaches on Mars likely from a long gone ocean
  • NASA's rovers just found similar gnarly rocks on opposite sides of Mars
  • The best telescopes for gazing at stars and solar eclipses in 2024
  • NASA asked for cheaper ways to get Mars samples. It had one all along.
  • NASA's Mars rovers had a gangbusters summer of rocks
Curiosity exploring a region with sideriteAt a Martian site nicknamed Ubajara, NASA's Curiosity rover discovers siderite, an iron carbonate mineral that might solve a mystery about how the planet lost its thicker atmosphere. Credit: NASA / JPL-Caltech / MSSS

After drilling less than 2 inches below the surface, Curiosity used its CheMin instrument to conduct X-ray diffraction analyses of rock and soil samples, according to the new paper. The presence of siderite in them means the rocks likely formed in calm water like lakebeds, not volcanoes or lava. On Earth, siderate tends to form in shallow lakes and swamps. 

Curiosity also detected sulfates, minerals that form when water evaporates. Geologists glean clues about a planet's past from the order in which minerals formed. That siderite came first in the sequence suggests a gradual drying of ancient Martian lakes, leaving behind these other minerals. The sample that didn't have siderite but had evidence of its breakdown materials supports the notion that Mars’ carbon cycleused to be active but became unbalanced over time.

"Drilling through the layered Martian surface is like going through a history book," said Thomas Bristow, a NASA research scientist and co-author of the paper. "Just a few centimeters down gives us a good idea of the minerals that formed at or close to the surface around 3.5 billion years ago."

If similar carbonates are found in other sulfate-rich layers across Mars, they could hold large amounts of carbon — perhaps equal to or even more than the carbon dioxide in Mars’ air today. Future observations could confirm these findings and illuminate how the planet changed as it lost its atmosphere.

0.1417s , 14408.7421875 kb

Copyright © 2025 Powered by 【couple had sex in dominos video】Enter to watch online.A NASA rover just exposed something on Mars that eluded orbiters,  

Sitemap

Top 主站蜘蛛池模板: 午夜国产理论 | 国产精品va在线观看视色 | 无码精品一区二区三区在线A片 | 乱人伦人妻中文字幕不卡 | 国产成人免费a在线播放 | 精品在线国产一区二区 | WWW亚洲精品久久久无码 | a三级三级成人网站在线视频 | 久久久久人妻一区精品色戒 | 久久久久久久久经典精品欧美 | 国产麻豆一精品一av一免费 | 波多野结衣车内乳精在线播放 | 在线国产一区二区三区av | 99久久无色码中文字幕人妻 | 久久无码人妻中文字幕豆芽 | 国产伦人伦偷精品视频 | 日本综合欧美一区二区三区 | 国产日本一区二区三区 | 精品久久久久久无码中文字幕 | aⅴ无码国产在线看 | 国产欧美精品区一区二区三区 | a级毛片免费观看视频 | 老熟妇乱子伦视频 | 国产欧美日韩亚洲一区二区 | 久久久久久亚洲精品不卡性色av | 国产亚洲精品久久精品6 | 中文成人无字幕乱码精品区 | 久久综合不卡视频 | 50路熟妇乱青青草免费成人福利视频 | 亚洲av无码精品无码麻豆 | 忘忧草社区WWW日本高清图片 | 欧美日韩精品久久免费 | 国产精品久久久久国产三级无码 | 久久AV无色码人妻蜜 | 久久久久久少妇久久久久久 | 久久国产乱子伦精品 | 中文人妻AV久久人妻水蜜桃 | 岛国av一区二区在 | 亚洲一区二区三区在线视频 | 国产精品自产拍在线观看蜜芽 | 伊人午夜|