最新研究發現，北極星是三顆星星，求證實？

01-16

原網頁：http://www.looooker.com/archives/16599
網頁內容：幾千年來，很多人都知道在北半球並不需要GPS或指南針來找到北方，只需要一片清朗的夜空能看得到北極星。然而宇航員用哈勃望遠鏡發現，北極星實際上是三顆星而不是一顆星，三顆星之間有著巨大的引力繞著統一中心轉動，並且在1.2萬年內失去指北的作用。

http://mentalfloss.com/article/68006/north-star-actually-three-stars
The "North Star" Is Actually Three Stars

As savvy travelers have known for millennia, above the equator you don』t need GPS or a compass to figure out which way is north. All you need is a clear night sky.
From our perspective, the stars appear to slowly move in vast circles around what seems to be a fixed point of light more or less directly above the North Pole. This beacon happens to line up almost perfectly with the invisible axis on which Earth rotates (though it』s still about .7 degrees off target). This is, of course, the North Star, also known as Polaris (and many other aliases).

But here』s the thing: Polaris isn"t one star. It』s three.
Located in the constellation Ursa Minor, Polaris is actually a triple star system. The first indication that the North Star was more than it appeared to be came in 1780, when William Herschel examined it through his telescope. Instead of spotting a single star, Herschel (who a year later discovered Uranus) instead found two close neighbors.
These stars are an odd couple. Polaris A is a supergiant roughly six times more massive and 2000 times brighter than our own Sun that dwarfs its companion, Polaris B. They"re 323 light-years away, as scientists calculated in 2012. (Previous estimates had put them 434 light-years from Earth.) The vast distance blurs their boundaries to the naked eye.

In 2006, astronomers using the Hubble telescope realized this duo was actually a trio when they spotted a third, relatively diminutive star nearby, which they dubbed Polaris Ab. As you might expect, these three exert a huge gravitational force on each other. Due to their fairly close proximities, all three orbit around a common center of mass.
Some experts think two other stars, Polaris C and Polaris D, may be "gravitationally bound" to this trio, though they』re located a bit farther off.

Despite how strongly it shines, Polaris is only the 50th brightest star in the sky. Its luminosity fluctuates; right now, it』s in the midst of a particularly dazzling cycle. Today the star system looks up to 4.6 times brighter than it did in the past.
Polaris won"t be the North Star for much longer (at least on the timescale of the universe). Because Earth』s axis wobbles over time, Polaris will lose its North Star status about 12,000 years from now when the more radiant Vega—which thousands of years ago was the North Star—reclaims its place.
爪機不能上圖，具體看鏈接圖片

請自行百度「勾陳一」

這些都是真的，但都遠遠不是新聞。

最新研究？

現在的北極星（小熊座alpha）是三合星的事情，除了自古以來就知道的A星，1780年發現了B星，1929年發現了Ab星。2006年哈勃望遠鏡就有一張全家福。

至於北極星輪流坐的事情，叫歲差。公元前1xx年托勒密就已經有所發現，19世紀就能完整計算綜合歲差。Again，最新研究？

宇宙中的雙星三星系統還是挺多的，只是肉眼可見的很少而已，這些根恆星的形成原理有關，這不是最新研究，大的望遠鏡能夠有更大的解析度，因此能看到更多細節，你看那張照片北極星的相對尺度就知道了。

謝邀。即便是題主發的這篇英文文章，裡面也說了，2006年1月哈勃望遠鏡就觀測到了較暗的第三顆矮星了，都快十年了，何來最新研究之說？全文貌似就沒提過最新研究這個字眼，只說到根據2012年科學家的計算，勾陳一距離地球是323光年，而不是原先估測的434光年。另外有些學者認為還有其它兩個星體C和D在比較遠的地方被核心三星引力束縛。查了下，維基上的對這兩顆星的存在時確定的。

並且宇航員不會使用哈勃空間望遠鏡的，地面的各實驗室、研究所會使用其數據。

消滅人類暴政，世界屬於北極星！