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

【passed out mature wife abused sex videos】Enter to watch online.Barnard's star tricked scientists before: why this planet is real.

Source:Feature Flash Editor:recreation Time:2025-07-03 19:19:30

Scientists say they've finally found a world orbiting Barnard's star,passed out mature wife abused sex videos the closest single star to the sun.

This rocky planet, discovered with the European Southern Observatory's Very Large Telescope in Chile, is smaller than Earth, and flies around its tiny cool star every three days. Barnard's star is six light-years away from us, in the constellation Ophiuchus. The only closer stars are the trio that make up the Alpha Centauri system. 

Anyone have déjà vu? Yes, exoplanethunters have thought before they'd found worlds around this particular star — a popular sci-fi setting— and their discoverers seemed pretty darn sureof their data, too. 


You May Also Like

But this one is the real deal, a new research team says. Honest

"The discovery of this planet, along with other previous discoveries such as Proxima b and d, shows that our cosmic backyard is full of low-mass planets," said Alejandro Suárez Mascareño, a coauthor of the paper publishedin the journal Astronomy & Astrophysicstoday. 

SEE ALSO: Scientists haven't found a rocky exoplanet with air. But now they have a plan. Exoplanet orbiting Barnard's starA confirmed exoplanet orbits Barnard's star every three days. Credit: ESO / M. Kornmesser illustration

Despite its close proximity to our solar system, Barnard's star is too faint to see with the naked eye. A simple eight-inch amateur telescope should be able to spot it in deep space, though. 

This special star, a target of exoplanet searches for over a century, has a long history of false positive planet detections. Six years ago, an international team of researchers thought they had found a planet three times larger than Earth, just outside the so-called habitable zone, in the Barnard's star system. The authors of that paper, publishedin the journal Nature, characterized the world as frozen and circling its red dwarfhost star every 233 days.

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!

That potential discovery, using the radial velocity method, relied on 771 observations over two decades. At the time it was considered an unconfirmed candidate, but the lead scientist had said in a statement then that he was "99% confident that the planet is there." He cautioned, however, that the team would continue to observe the star to rule out other "possible, but improbable" explanations. 

The radial velocity technique looks for subtle changes in the frequency of starlight as seen from Earth. The gravitational tug of an orbiting planet is thought to cause little wobbles in the light measurements. But sometimes astronomers can be fooled: What might appear to be a planetary signal could in fact be little spots on the surface of the star, causing a false detection. 

Since the 2018 super-Earth candidate was proposed, other astronomers' follow-up studies have formally refuted its existence, including this most recent one. In 2021, a team led by astronomer Jack Rubin conducted nearly 120 new observationswith an instrument on the Hobby-Eberly Telescope in Texas and found the mistaken signal was associated with the star's 145-day rotation period. 

The clue that there was a misinterpretation came from the fact that the strongest signal coincided with a period when stellar activity was also strong. In 2022, another teamfound that the planetary signal was unlikely. 


Related Stories
  • Webb telescope is about to home in on these 2 exoplanets. Here's why.
  • The strange new worlds scientists discovered in 2024
  • The best telescopes for gazing at stars and solar eclipses in 2024
  • Sorry Trekkies: Bad news about the 'real-life Planet Vulcan'
  • Scientists haven't found a rocky exoplanet with air. But now they have a plan.

But that wasn't the first time the star had tricked astronomers into thinking it had planets. Astronomer Peter van de Kamp thought he had discovered two gas giant planets around Barnard’s star, the first as long ago as the 1960s. Some astronomers say he may have died believing he was the first to ever locate exoplanets. His findingswere invalidated in later years.

Unlike the previous bloopers, the newly discovered planetary signal — suggesting a world half the mass of Venus— is the first exoplanet to be confirmed in the Barnard's star system with at least two other telescopes. Other verifying observations came from the Roque de los Muchachos and Calar Alto observatories in Spain and the La Silla Observatory in Chile. Astronomers estimate the planet to be about 20 times closer to its star than Mercuryis to the sun, with a surface temperature of about 250 degrees Fahrenheit. 

Illustrating the distance of Barnard's star systemBarnard's star is only six light-years away from the sun. Credit: IEEC / Science-Wave – Guillem Ramisa infographic

The bad news: Even if the star were about 2,500 degrees cooler than the sun, the planet would still be too hot for liquid water to exist on its surface, and not likely to be habitable, said lead author Jonay González Hernández. But the good news is that the team has found three other planet candidates near the star — and perhaps one of those, if confirmed, could be Earth-like. 

The previously suspected exoplanets were dubbed "Barnard b" until they were ruled out through the complicated and nuanced process of discovering new worlds trillions of miles away.

So, in the famous words of the To Tell the Truthgame show, will the real Barnard b please stand up? 

0.1459s , 12254.4375 kb

Copyright © 2025 Powered by 【passed out mature wife abused sex videos】Enter to watch online.Barnard's star tricked scientists before: why this planet is real.,Feature Flash  

Sitemap

Top 主站蜘蛛池模板: 久久国产亚洲精品美女久久久久 | 国产又色又爽又黄又免费的小说 | 麻花豆传媒剧国产MV在线 | av无码精品久久久久精品免费 | 精品午夜国产福利观看 | 欧美成人精品欧美一级乱黄 | 视频在线国产精品 | 波多野百合在线播放一区 | 国产另类ts人妖一区二区 | 被黑人强到高潮喷水A片 | 激情视频亚洲 | 午夜精品久久久久久久爽 | 伊人丁香五月天久久综合 | 亚洲午夜在线视频观看 | 中文字幕无码剧情在线播放 | 亚洲一区有码 | 国产人妻人伦精品婷婷 | a级毛片在线免费观看 | 91精品全国免费观看青青 | 91精品日韩人妻无码久久不卡 | 桃子视频在线高清免费观看 | 国产不卡视频一区二区三区四区 | 五月六月丁香婷婷激情 | 免费精品一区二区三区在线观看 | 国产黄在线观看免费观看不卡 | 人妻精品久久久久中文字幕一冢本 | 91精品国产乱码久久久久久 | 亚洲色久桃花在线 | 亚州欧美中文字幕精品综合 | 岛国午夜精品视频在线观看 | 国产精品久久久久久久伊一 | 孕妇毛片网站 | 日本无码精品一区二区三 | 91大神大战丝袜美女在线观看 | 日本H无码黄肉动漫后宫 | 色综合久久精品亚洲国产 | 国产成人无码AⅤ | 精品思思久久99热网 | 国产精品一区二区爱插插 | 精品久久综合1区2区3 | 亚洲精品色午夜无码专区日韩 |