Set as Homepage - Add to Favorites

九九视频精品全部免费播放-九九视频免费精品视频-九九视频在线观看视频6-九九视频这-九九线精品视频在线观看视频-九九影院

【cameron diaz porn sex video】This nearby dwarf planet's ice may be left over from a dirty ocean

Plutois the most famous dwarf planet,cameron diaz porn sex video due in part to its very public demotion from ninth planet of the solar system two decades ago. 

But a relatively obscure dwarf planet in the main asteroid belt could be the most accessible icy world to Earthlings in space. Though it's less than 600 miles wide, Ceresappears to be rich in water ice, and new research from Purdue University and NASA's Jet Propulsion Laboratory is helping to confirm it was once drenchedin flowing water. 

For years, Ceres confounded experts with its cratered surface. These pits seemed too deep and rigid to exist on a retired water world. Scientists now think that may not be a contradiction after all, if they account for a key ingredient: mud — and maybe lots of it. 


You May Also Like

"Our interpretation of all this is that Ceres used to be an 'ocean world' like Europa (one of Jupiter's moons), but with a dirty, muddy ocean," said Mike Sori, a planetary geophysicist at Purdue, in a statement. "As that muddy ocean froze over time, it created an icy crust with a little bit of rocky material trapped in it."

SEE ALSO: NASA just found a new type of ancient asteroid loaded with water Juling Crater on CeresNASA's Dawn spacecraft observed craters on the dwarf planet Ceres between 2015 and 2018. Credit: NASA / JPL-Caltech / UCLA / MPS / DLR / IDA / ASI / INAF

Using computer models, the team discovered that dirt mixed into Ceres' ancient ocean could have reinforced the dwarf planet's ice, holding the craters' shapes and preserving some of its other geology for long periods of time. This mixture would allow the surface to be both icy and strong. The studyappears in the journal Nature Astronomy.

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!

Previous thinking suggested that if the dwarf planet were icy, the craters would deform easily, like glaciers flowing on Earth — or like gooey honey, Sori said. 

The paper, led by doctoral student Ian Pamerleau, posits that Ceres' surface is, in fact, loaded with ice — perhaps as much as 90 percent of it. Through simulations, the team tested different crust scenarios and found that dirty ice could keep the crust from "flowing" over billions of years. With this structure, the dwarf planet would get gradually muddier and less frozen at lower depths. 

A NASA spacecraft got a closer look at Ceres' surface between 2015 and 2018 through the Dawn mission. Those observations revealed the dwarf planet's unusual bright patches as a salty crust of sodium carbonate, the same type of salt people use as a water softener. 

After looking at the mission data, scientists thought perhaps the salt was the residue of a vast, briny reservoirabout 25 miles underground and hundreds of miles wide. Meteorite impacts either melted slush just below the surface or created large fractures in the dwarf planet, allowing salt water to ooze out of ice volcanoes.


Related Stories
  • NASA just found a new type of ancient asteroid loaded with water
  • Pluto's 'heart' is yet another bummer for the dwarf planet
  • Venus is 900 degrees. That's surprisingly not why it's bone-dry.
  • The best telescopes for gazing at stars and solar eclipses in 2024
  • Water worlds in the galaxy could be 100 times more common than once thought
Dawn spacecraft observing Ceres' Occator CraterBright features on the surface of dwarf planet Ceres are a salty crust of sodium carbonate, the same type of salt people use as a water softener. Credit: NASA / JPL-Caltech / UCLA / MPS / DLR / IDA

Astrobiologists have wondered if simple, microbial life could exist on Ceres, the closest frozen ocean world to Earth at an average of 260 million miles away. The National Academies Planetary Science Decadal Surveyrecently recommended that NASA return to Ceres to collect samples.

More robotic missions to the dwarf planet could provide greater insights and points of comparison for the icy moonsof the outer solar system, such as Saturn's Enceladusand Jupiter's Europaand Ganymede, Sori said. 

"Some of the bright features we see at Ceres' surface are the remnants of Ceres' muddy ocean, now mostly or entirely frozen, erupted onto the surface," he said. "So we have a place to collect samples from the ocean of an ancient ocean world that is not too difficult to send a spacecraft to."

0.1344s , 14253.8046875 kb

Copyright © 2025 Powered by 【cameron diaz porn sex video】This nearby dwarf planet's ice may be left over from a dirty ocean,Data News Analysis  

Sitemap

Top 主站蜘蛛池模板: 最近中文字幕 | 国产二代与美女酒店在线播放 | 亚洲三级在线播放 | 欧美日韩国产一区 | 妺妺窝人体色www聚色窝 | www.99精品 | 蜜桃传媒视频 | 51精产国品一二三产区区 | 香蕉精品亚洲二区在线观看 | 精品免费看国产一区二区 | 日本中文字幕第 | 午夜成人理论福利片 | 日韩欧美亚洲国产永久在线观看 | 日韩精品在线视频一区二区三区 | 好吊妞在线视频免费观看综合网 | 亚洲天堂2025女人天堂 | 手机免费看一级 | 欧美午夜在线 | 亚洲精品免费看日韩 | 欧美精品区 | 日韩亚洲精品不卡在线 | 宅男在线永久免费观看 | 日本一区二区三区免费播放 | 91精品人| 免费10| 国产精品酒店在线精品 | 国产经典三级在线播放 | 国产又粗又大又长又猛在线视频 | 国产在线精品成人一区二区三区 | 欧美日韩精品一区二区视频 | 亚洲激情自拍偷拍 | 激情综合色五月丁香六月欧美 | 91免费公开视频 | 免费播放婬乱男女婬视频国 | 国产精品tv在线观看 | 欧美一区二区三区性 | 91视频完整版高清 | 国产欧美日韩在线一区二区不卡 | 国产欧美日韩精品高清二区综合区 | 国产aⅴ熟女 | 欧美在线成人怡红院 |