Set as Homepage - Add to Favorites

日韩欧美成人一区二区三区免费-日韩欧美成人免费中文字幕-日韩欧美成人免费观看-日韩欧美成人免-日韩欧美不卡一区-日韩欧美爱情中文字幕在线

【?? ?? ??】Scientists discover mysterious solar system remains in deep space

We know space is ?? ?? ??teeming with mystery. Adding intrigue, astronomers recently found an ancient solar system that's far different from our cosmic home.

Some 90 light-years away, the researchers spotted an over 10 billion-year old white dwarf star — meaning the remaining hot core of a dead star similar to the sun — that's surrounded by a graveyard of broken apart chunks of planets, called planetesimals. The faint star has pulled in debris from these objects. But this solar system is unlike anything around us. It teems with elements like lithium and potassium. Crucially, no planets in our solar system have such a composition.

Why was this ancient solar system in our early Milky Way galaxy so different? How did it become rich in these materials, which were rare at the time?


You May Also Like

"It is a complete mystery," Abbigail Elms, a PhD student at the University of Warwick who researches white dwarfs, told Mashable. The research was published this week in the science journal Monthly Notices of the Royal Astronomical Society.

SEE ALSO: Huge, unusually powerful explosion in space just detected by scientists

As noted above, this solar system is old. That means the white dwarf (called WDJ2147-4035) and its surrounding solar system formed, and died, before the sun and Earth were even born. In fact, the chunks of former planets around WDJ2147-4035 arethe oldest planetesimals that have ever been found in our galaxy around a white dwarf, Elms noted.

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!

How do astronomers know what this archaic solar system was composed of?

They discovered this white dwarf, and another one of a similar age, using an observatory in space called Gaia. While orbiting the sun, this distant spacecraft is mapping out stars and galaxies in the cosmos. After spotting these white dwarfs, the researchers then turned to an instrument called the "X-Shooter," located at a high elevation in Chile, to detect what is and isn't present in the stars' atmospheres (X-Shooter is a type of profoundly valuable astronomical tool called a "spectrometer"). In WDJ2147-4035, they found chemicals like lithium, potassium and sodium had accreted — or got pulled in by gravity and amassed around — the ancient star. White dwarfs are made of hydrogen or helium, so the rocky remains of planets were responsible for supplying the other unique elements, the researchers concluded (by running simulations of this solar system's evolution).

chunks of planets orbiting white dwarf starsAn artist's conception of chunks of planets (planetesimals) orbiting white dwarf stars. Credit: University of Warwick / Mark Garlick

Interestingly, the other white dwarf (WDJ1922+0233) they discovered was significantly different than the mysterious one. It's more familiar. They determined this star had pulled in planetary debris that's similar to Earth's rocky crust. So although one solar system remains an anomaly, the other one shows that Earth isn't so unique in the cosmos: There are other solar systems out there somewhat like it.

Want more scienceand tech news delivered straight to your inbox? Sign up for Mashable's Top Stories newslettertoday.


Related Stories
  • Strange, unexpected things are happening on Neptune
  • A NASA rover just found trash on Mars
  • Behold the Milky Way's supermassive black hole in first-ever photo
  • The best telescopes for gazing at stars and solar eclipses in 2024
  • The mega-comet hurtling through our solar system is 85, yes 85, miles wide

These two solar systems, however, are filled with graveyards of former planets. Over 95 percent of stars, like the sun, evolve into white dwarfs. Near the end of their lives, they expand into colossal red giant giants, destroying or disrupting nearby objects. When our sun expands, it will engulf planets like Mercury, Venus, and maybe even Earth, before it sheds its outer layers. The red giants will leave behind relics of broken apart planets and moons. The remnant star itself will be a white dwarf.

This is our cosmic destiny. Just not for a long, long, long time.

"Our sun will evolve into a white dwarf, in approximately 5 billion years,"Elms said.

0.1137s , 9759.9609375 kb

Copyright © 2025 Powered by 【?? ?? ??】Scientists discover mysterious solar system remains in deep space,Public Opinion Flash  

Sitemap

Top 主站蜘蛛池模板: 精品国产三级AV一区二区三区 | 国产在线不卡一区 | 边吃奶边狠狠躁日韩A片 | 538亚洲欧美国产日韩在线精品 | 成av免费大片黄在线观看 | 国产福利一区二区三区在 | 久久视频在线视频观看2024 | 免费观看碰碰碰视频在线观看 | 麻豆精品无码国产在 | 日韩精品人妻在线视频免费 | 精品一区二区三区高清免费观看 | 男女裸体AAAAA片 | 久久精品一卡二卡三卡四卡视频版 | 精品久久久久久中文字幕 | 国产一国产一级毛片视频在线 | 精品一区二区三区黄页网站 | 欧美日韩亚洲另类一区二区 | 四虎精品| 99久久久国产精品免费6666 | 麻豆精品无人区码一二三区别 | 国产成人精品第一区二区三区官网版手机版 | 北条麻妃初尝试黑人在线观看 | 精品久久久久久中文字国产 | 纯肉小黄文高H | 日韩在线精品观看视频 | 亚洲免费片中文字幕 | 成人一区二区三区在线播放 | 国产欧美精品一区二区三区涩涩 | 国产a级高清版毛片 | 久久久久高潮毛片免费 | 国产三级adc全集在线观看 | 囯产精品一区二区三区中文字幕 | 大陆人妻熟妇多毛A片 | 四虎影视免费观看免费观看 | 人妻无码aⅴ中文字幕 | 日韩人妻一区二区三区久久 | 国产精品无码好吊视频一区二区三区久久 | 国产丰满肥熟在线观看 | 国产成人福利院免费观看 | 国产亚洲日韩网曝欧 | 国产精品寸止一区二区三区四区 |