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2019年2月25日星期一

一個超大型黑洞正在以每秒110公里朝地球的方向而來

一個超大型黑洞正在以每秒110公里朝地球的方向而來
A Supermassive Black Hole Is Heading Earth’s Way at 110 Km per Second


There is a massive black hole with millions of times more mass than our sun is plunging towards Earth and will one day annihilate life as we know it. This particular black hole is coming towards us at 110 kilometres per second and is at the center of the Great Andromeda Galaxy – the Milky Way’s closest and much larger neighbor.

At the center of the most known galaxies, there exist a supermassive black hole which stars spin around and helps keep everything in formation. But such is the powerful gravitational pull of the Milky Way and Andromeda that they are being drawn toward each other and will one day crash.
Fraser Cain, publisher of space website Universe Today, wrote for Phys.org:

“There’s a black hole at the centre of the Milky Way. And not just any black hole, it’s a supermassive black hole with more than 4.1 million times the mass of the Sun. It’s right over there, in the direction of the Sagittarius constellation. Located just 26,000 light-years away. And as we speak, it’s in the process of tearing apart entire stars and star systems, occasionally consuming them, adding to its mass like a voracious shark.”
Due to the size of Andromeda however, there is only going to be one winner when it smashes into the Milky Way. But, as Andromeda is 2.5 million light years away, it will take over four billion years to reach us, so we are safe for now.

Mr Cain said:

“Panic will happen when the Milky Way collides with Andromeda in about 4 billion years. Suddenly, you’ll have two whole clouds of stars interacting in all kinds of ways, like an unstable blended family. Stars that would have been safe will careen past other stars and be deflected down into the maw of either of the two supermassive black holes on hand. Andromeda’s black hole could be 100 million times the mass of the Sun, so it’s a bigger target for stars with a death wish.”

https://www.sci-techuniverse.com/2018/12/a-supermassive-black-hole-is-heading.html

法科學家發現距離地球最近黑洞,比太陽大7倍,正快速向地球飛來


那麼太陽系不會遇到這樣的黑洞嗎?這個誰也不敢打包票,15年前法國天文學家曾經宣布,有一個正在快速飛行的黑洞,前進的方向正是地球,這個黑洞已被命名為"GRO J1655-40",距離地球有6000光年,法國天文學家認為它是一個黑洞,並且形成時間較早,質量已達太陽的7倍。

讓人吃驚的是這個黑洞的飛行速度非常快,目前正在以比其周圍的星球高出四倍的速度穿過銀河系,即每秒鐘的飛行速度大概是120千米,負責這項研究的法國核能委員會的弗利克斯-米拉貝爾表示:"這是我們發現的第一個在銀河系內部快速飛行的黑洞。"但更可怕的是,它飛行的前進方向正是我們的地球。


https://kknews.cc/science/332j6lg.html


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