国产精品美女一区二区三区-国产精品美女自在线观看免费-国产精品秘麻豆果-国产精品秘麻豆免费版-国产精品秘麻豆免费版下载-国产精品秘入口

Set as Homepage - Add to Favorites

【?? ??????? ???????? ?????? ?? ???】Enter to watch online.NASA spacecraft snaps image of ancient, winding rivers on Mars

Source： Editor：hotspot Time：2025-07-05 06:15:19

NASA's eye in the Martian sky has spotted evidence of dried-up,?? ??????? ???????? ?????? ?? ??? primordial rivers on Mars.

The space agency's Mars Reconnaissance Orbiter captured a snapshot of another time, billions of years ago, when water flowed on the surface of a temperate Mars. NASA recently posted the image on its "Planetary Photojournal."

"This image of ridges in Aeolis Planum tells a story of ancient rivers and a Mars very different to that of today," NASA wrote online.

SEE ALSO: NASA photos reveal serious damage to its Mars helicopter
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!

The meandering forms you see below are the result of water once filling these rivers with gravel, while finer grains surrounded the waterway when the banks overflowed. "The gravely river bottom and the fine-grained surroundings can lead to a strange phenomenon that geologists call inverted channels," the agency explained. "After the river disappears, the fine-grained surroundings can be easily eroded away leaving the gravely river bed as a high-standing ridge."

The long-evolving geological result shows where ancient rivers once snaked across Mars.

Dried-up evidence of ancient rivers on Mars. Dried-up evidence of ancient rivers on Mars. Credit: NASA / JPL-Caltech / University of Arizona A zoomed-in view of the ridges left by past rivers on Mars.A zoomed-in view of the ridges left by past rivers on Mars. Credit: NASA / JPL-Caltech / University of Arizona

NASA's spacecraft snapped this image from nearly 166 miles above high Martian plains. This Martian satellite carries a big camera, aptly called the High Resolution Imaging Experiment, or HIRISE, that captures such detailed photos.

Related Stories
  • NASA rover makes adventurous trip, then snaps stunning Mars picture
  • An enormous Martian cloud returns every spring. Scientists found out why.
  • The best telescopes for gazing at stars and solar eclipses in 2024
  • Japan’s moon landing picture might be the space photo of the decade
  • If a scary asteroid will actually strike Earth, here's how you'll know

Unlike Earth, Mars has largely lost its atmosphere, leaving it an intensely dry, desert world. Mars today is 1,000times drier than the driest desert on Earth, and combined with an irradiated surface creates a harsh environment for life to survive. But NASA's car-sized Perseverance rover is currently sleuthing the Red Planet's surface for potential signs of past primitive life — if it ever existed.

In the future, other craft may join NASA's Martian satellite and rovers on the hunt. The space agency has started investigating the potential for a compact Mars plane, a craft that might one day swoop at some 135 mph over the Martian desert. And, one day, pioneering astronauts may step onto Mars' red soil, too.

0.1895s , 10114.3125 kb

Copyright © 2025 Powered by 【?? ??????? ???????? ?????? ?? ???】Enter to watch online.NASA spacecraft snaps image of ancient, winding rivers on Mars,  

Sitemap

Top 主站蜘蛛池模板： 韩国新r级限制片 | 91人成在线观看网站 | 91国偷自产一区二区三区蜜臀 | 成年人在线观看视频 | 国产v亚洲v天堂a无码 | 东京热av加勒比一区二区 | 福利片免费视频在线观看 | 国产97色在线|免费 国产97色在线|日韩 | 高清无码性色网站 | 91精品露脸在 | 国产av旡码专区亚洲av苍井 | 99久久无码精品国产免费 | 高清无码国产精品区 | 91最新网站免费 | 午夜福到在线100集详情介 | 高潮毛片又色又爽免费 | 99re热视频在线 | av天堂亚洲mm | h精品无码动漫在线观看 | 91久久国产香蕉熟女线看 | 91白浆网站大杳蕉在线视频 | 国产vr一区二区 | 91国内免费久久久久久久久久 | 91精品综合国产在线观看 | 国产10000部拍拍拍免费视频 | 爆乳国产中文在线观看 | 午夜毛片不卡免费观看视频 | 午夜伦情电午夜伦情电影 | av网站免费线看 | 午夜在线观看高清视频 | 91九色熟女 | 国产办公室无码视频在线观看 | 波多野结衣hd中文字幕 | 91精品国产91久久久久久蜜臀 | 大香伊蕉在人线国产手机看片 | 91精品在线视频观看 | 午夜性福利 | 午夜在线观看高清视频 | av天堂影音先锋 | av无码不卡免费网 | 99精品欧美一区 |