Name: 宇宙中最極端的黑洞 (The Most Extreme Black Holes In The Universe)
Uploaded: 2020-10-23T19:06:50.000Z
Duration: 4 min 42 s

They're some of the most violent objects in our universe,

它們是我們宇宙中最暴力的物體。

powerful enough to rip entire stars to pieces.

強大到足以將整個星體撕成碎片。

You see, the more mass you can shrink into a small space,

你看，你可以把更多的品質收縮到一個小空間裡。

the stronger your gravitational force will become.

To make Earth into a black hole, for instance,

比如說，要把地球變成一個黑洞。

you'd have to shrink it to less than an inch across.

你必須把它縮小到一英寸以下的寬度。

But real black holes are much larger than that

Here's just how big black holes can really get.

There are three common types of black holes.

and collapses in on itself, like this one,

roughly three times the length of Manhattan.

是足夠的品質，相當於我們11個太陽。

there's a black hole that is 58 miles across

and packs as much mass as 15.7 suns inside.

並在裡面裝了15.7個太陽的品質。

Up next are the intermediate-mass black holes,

it's nearly large enough to stretch from Florida to Maine,

它幾乎大到可以從佛羅里達州延伸到緬因州。

black holes start to get pretty big compared to Earth,

與地球相比，黑洞開始變得相當大。

when you consider the sheer mass they carry.

當你考慮到他們所攜帶的純粹的品質。

spanning a region about 172,000 miles wide,

but inside is as much mass as 47,000 suns.

但裡面的品質卻有47000個太陽那麼多。

which lives at the center of our Milky Way galaxy.

It covers a region about 14.6 million miles in diameter.

它覆蓋了一個直徑約1460萬英里的區域。

compared to other supermassive black holes.

Take the one at the center of our neighbor,

就拿我們鄰居中心的那個來說吧。

which has a diameter of 516 million miles,

to some of the largest black holes in the universe,

that surpasses the size of our solar system.

So let's look at the supermassive black hole

那麼我們來看看超大品質黑洞吧

so it would stretch further than Uranus' orbit,

所以它將比天王星的軌道延伸得更遠。

and it has about the same mass as 660 million suns.

而且它的品質和6.6億個太陽的品質差不多。

And the supermassive black hole at the center of Messier 87

而位於Messier 87中心的超大品質黑洞。

是如此巨大，天文學家可以看到它

But this supermassive black hole, as large as it is,

So we have to look at one of the most massive

It has a diameter of about 78 billion miles.

For perspective, that's about 40% the size

為方便起見，那是四成的面積。

of our solar system, according to some estimates.

about 21 billion times the mass of our sun.

black holes can be millions of times larger

than suns and planets or as small as a city.

比太陽和行星或小到一個城市。

It all depends on how much mass is inside.