国产三级大片在线观看-国产三级电影-国产三级电影经典在线看-国产三级电影久久久-国产三级电影免费-国产三级电影免费观看

Set as Homepage - Add to Favorites

【sex doc la】Webb telescope just got a crystal

Source：Feature Flash Editor：explore Time：2025-07-02 09:27:04

A sweltering planet circling a star much like the sunis delivering something scientists rarely get when studying distant worlds — clarity.

Using the James Webb Space Telescope,sex doc la a collaboration of NASAand its European and Canadian counterparts, a team of astronomers zoomed in on TOI-421b, a planet more than 2.5 times larger than Earth and 245 light-yearsaway in space. 

The exoplanetisn't just missing clouds, it's free of the typical hazes that have obscured views of the atmospheres surrounding other planets in its size class. 

You May Also Like

That makes TOI-421b a standout among so-called "sub-Neptunes," planets larger than Earth but smaller than Neptune. These worlds are thought to be the most common in the Milky Way, yet scientists know relatively little about them, said Eliza Kempton, principal investigator of the study. That's because their atmospheres have been so hard to study.

"They're incredibly plentiful in our galaxy," Kempton, an astronomer at the University of Maryland, told Mashable. "And that just raises the importance that if this is the most common kind of planet, we better try to figure out what they're all about." 

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!
SEE ALSO: These scientists think alien life best explains what Webb just found An illustration of Webb telescope flying through spaceThe James Webb Space Telescope has provided the clearest atmospheric reading yet for a hot sub-Neptune exoplanet. Credit: NASA GSFC / CIL / Adriana Manrique Gutierrez illustration

The way the team analyzed the planet's atmosphere is called transmission spectroscopy. When planets cross in front of their host star, starlight shines through their atmospheres. Molecules within the atmosphere absorb certain light wavelengths, or colors, so by splitting the star’s light into its basic parts — a rainbow — astronomers can look for which light segments are missing to figure out the makeup of an atmosphere.

When they peered at TOI-421b, they saw strong signs of water vapor and a hydrogen-rich atmosphere, with no evidence of the thick aerosol layers that have previously cloaked other sub-Neptunes. 

The team picked up hints of carbon monoxide and sulfur dioxide, though they'd need more observations to confirm those detections. The researchers also noted what was absent from the data: methane and carbon dioxide. Their findingsare published in the Astrophysical Journal Letters.

Scientists chose TOI-421b for this study because it was predicted to have a haze-free atmosphere, based on its extremely high temperature of 1,340 degrees Fahrenheit. Cooler planets — like the previously studied sub-Neptunes orbiting dimmer stars called red dwarfs— often show signs of methane. But methane tends to break down in high heat, unable to start the chemical process that can lead to haze.

Related Stories
  • These scientists think alien life best explains what Webb just found
  • Webb telescope may have just revealed a spiral galaxy's startling secret
  • The best telescopes for gazing at stars and solar eclipses in 2024
  • Scientists haven't found a rocky exoplanet with air. But now they have a plan.
  • Scientists don't know what these mysterious planets are made of

The big surprise was just how lightweight the planet's atmosphere appeared. It wears a jacket of hydrogen and helium, like the gas its star is made of. Previous sub-Neptune studies revealed worlds wrapped in much heavier gases that could potentially be water worlds. Scientists are now wondering if the planet has held onto the molecular outfit it was born with billions of years ago.

Perhaps the type of star a planet orbits changes how the atmosphere of that world develops over time. Or maybe the hotter planets are just more likely to have clear skies. Whatever the reason, the team is motivated more than ever to look at other hot sub-Neptunes for patterns.

"So we can see if this planet just turned out to be kind of a unique snowflake," Kempton said, "or is it emblematic of a class of planets that all have similar properties?"

0.1341s , 10000.4765625 kb

Copyright © 2025 Powered by 【sex doc la】Webb telescope just got a crystal,Feature Flash  

Sitemap

Top 主站蜘蛛池模板： 男同桌上课时狂揉我下面污文 | 成人成码精品久久亚洲 | 亚洲色无码一区二区在线观看 | 97人妻久久久精品系列A片 | 国产1988精品A片 | 国产欧美亚洲精品第3页在线 | 日韩在线中文字幕欧美 | 欧美日韩中文字幕 | 精品久久久久久无码人妻热av | 噜噜噜噜私人影院av线观看 | 日韩在线精品视频 | 一本大道香蕉久97 | 国产欧美一区二区久久 | 国产亚洲日韩在线观看 | 久久婷婷国产综合精品 | 99久久久国产精品免费 | 韩国无码一区二区三区在线观看 | a级毛片免费不卡在线播放 a级毛片免费高清 | 成人深夜福利视频 | 91精品久久久久久久久中文字幕 | 亚洲免费人成视频观看 | 波多野结衣一二区 | 国产高清在线精品一区在线 | 国产精品免费中文字幕 | 日韩欧美视频一区二区三区 | 丁香狠狠色婷婷久久综合亚洲日本一区二区 | 国产成人乱码一区二区三区 | 亚洲精品久久久久高潮 | 天天综合网久久一二三四区 | 欧美日韩免费一区二区三区 | 精品一区二区三区五区六区 | 老湿影院视色情下 | 青青久在线视频免费视频 | 国产浮力草草影院CCYY | 精品做爰无码片 | 黄色三级视频在线观看 | 狠狠色丁香久久婷婷 | 精品久久无码一区二区 | 美国毛片毛片全部免费 | 无人区乱码一区二区三区 | 国产成人精品一区二区3 |