Set as Homepage - Add to Favorites

精品东京热,精品动漫无码,精品动漫一区,精品动漫一区二区,精品动漫一区二区三区,精品二三四区,精品福利导航,精品福利導航。

【KIM ANH SEX VIDEOS】Mars gets walloped by space rocks way more than scientists thought

Watch out,KIM ANH SEX VIDEOS Martians.

Meteorites slam into Mars five times morethan planetary scientists thought, a finding published in the journal Nature Astronomy. This makes impacts on the Red Planet about a daily occurrence. A 26-foot-wide (8-meter) crater forms almost each day, and a nearly 100-foot (30-meter) crater is created once a month.

Previous estimates of these Martian impacts largely came from studying crater imagery on the moon and from Mars-orbiting craft. But unprecedented seismic data — detected by NASA's now-defunct InSight lander — showed objects regularly impacting the surface.


You May Also Like

"This rate was about five times higher than the number estimated from orbital imagery alone," Géraldine Zenhäusern, a seismologist at ETH Zurich in Switzerland who co-led the research, said in a statement.

SEE ALSO: NASA scientist viewed first Voyager images. What he saw gave him chills.

"While new craters can best be seen on flat and dusty terrain where they really stand out, this type of terrain covers less than half of the surface of Mars," Zenhäusern added. "The sensitive InSight seismometer, however, could hear every single impact within the landers’ range."

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!

(And much, much larger rocks have, over millions of years, slammed into Mars: NASA estimates there are over a quarter-millionimpact craters about the size of Arizona's famous Barringer Crater, which is some 4,000 feet across. And there are over 43,000 Martian craters larger than three miles wide.)

NASA’s InSight lander detected the marsquake created by this impact in December 2021. NASA’s InSight lander detected the marsquake created by this impact in December 2021. Credit: NASA / JPL-Caltech / University of Arizona The Insight lander's seismometer seen on the Martian surface.The Insight lander's seismometer seen on the Martian surface. Credit: NASA / JPL-Caltech

The InSight lander's sensitive seismometer was designed to detect Martian temblors, called "marsquakes," and it succeeded in detecting over 1,300 such quakes, including a "monster" temblor. But when a meteorite strikes Mars' surface, the signal is distinct. "Where a normal magnitude 3-quake on Mars takes several seconds, an impact-generated event of the same size takes only 0.2 seconds or less, due to the hypervelocity of the collision," ETH Zurich explained. "By analyzing marsquake spectra, a further 80 marsquakes were identified that are now thought to be caused by meteoroid strikes."

Mars is far more susceptible to meteorite impacts than Earth. When objects do collide with Mars, the Martian atmosphere is just 1 percent the volume of Earth's, meaning these space rocks are less likely to heat up and disintegrate. What's more, the Red Planet is much closer to our solar system's asteroid belt, a region teeming with millions of asteroids.


Related Stories
  • NASA craft snaps unprecedented photo of largest volcano in solar system
  • An enormous Martian cloud returns every spring. Scientists found out why.
  • The best telescopes for gazing at stars and solar eclipses in 2024
  • NASA's Voyager is in hostile territory. It's 'dodging bullets.'
  • If a scary asteroid will actually strike Earth, here's how you'll know

Understanding how impacts affect Mars is crucial for future human and robotic exploration. Impacts leave new Martian craters about every day. But that's not the whole story. The greater "blast zones" are some 100 times bigger in diameter, which poses a risk to any potential colonists or infrastructure.

Mars is an inhospitable world today, beyond the regular meteorite strikes. The planet is 1,000times drier than the driest desert on Earth. It has an elevated radiation environment ("about two and one-half times that in the International Space Station," according to NASA), and provides little radiation protection from solar storms.

But we know Mars wasn't always this way. A protective atmosphere once shielded the planet, and it harbored vigorously gushing rivers, and expansive lakes.

0.134s , 14218.078125 kb

Copyright © 2025 Powered by 【KIM ANH SEX VIDEOS】Mars gets walloped by space rocks way more than scientists thought,Info Circulation  

Sitemap

Top 主站蜘蛛池模板: 嫩草视频一区二区三区精品推荐 | 欧美乱妇乱码大黄AA片 | 老熟妇乱子伦系列视频 | 亚洲性受 | 国产精品第一区在线观看 | 国产精品日韩欧美一区二 | a级国产电影在线观看 | 99久久中文字幕人妻 | 色情狠久久AV五月综合五月 | 自拍视频国产三级 | 无码精品人妻一区二区三区av | 中文字幕无线手机在线 | 大香线蕉伊人久久 | 蝴蝶谷成人| 乱人伦人妻中文字幕在线入口 | 国产精品成aⅴ人片在线观看 | 人妻aⅴ中文字幕无码免费看 | 国产粉嫩嫩00在线正在播放 | 国产人妻人伦精品无码.麻豆 | 麻豆一卡2卡三卡4卡网站在线 | 美女av一区二区三区 | 中文字幕人妻熟女在线 | 蜜臀亚洲AV永久无码精品老司机 | 久久精品中文字幕少妇 | 国产不卡的一区二区三区四区 | 国产精品成人影院在线观看 | 亚洲国产日韩在线成人蜜芽 | 亚洲欧美制服丝腿 | 免费啪视频在线观看视频久18 | 久久无码免费一区二区三区 | 亚洲欧美日本人成在线观看 | 国产又黄又大又色爽的A片小说 | 五十路一区二区三区视频 | 欧美在线视频播放一区二区三区 | 麻豆成人在线观看 | 51精产国品一二三产区区 | 日产亚洲一区二区三区 | 乱码午夜-极品国产内射 | 五月天激激婷婷大综合丁香 | 久久99精品久久久久久秒播放器 | 在线精品视频一区二区三区 |