So you want to visit a black hole. You’ve packed your bags, 听说你打算去黑洞。你已经打包好了行李，
you've updated your passport, and you’re basically ready to jump on a spaceship and blast off. 更新了护照，就等着跳上飞船，点火起飞。
However, before you do that, I have just one piece of advice: 但是，在出发前，且听我一点小提示：
Don’t. 别去.
Ok…if you really MUST go, 额...如果你坚持要去的话，
I suppose you should at least know a few things about black holes before you leave. 我想，至少在走之前， 你需要了解一点关于黑洞的东西
First, you should know exactly what a black hole IS. 第一，你必须需要 知道的：黑洞究竟是个啥？
A black hole is a physical object in space, just like everything else. It’s made up of a tiny but massive 黑洞是太空中的一种物体， 就像其他东西一样。它是一个极小的，
point where gravity and density are infinite, a line beyond which everything, 但质量极大的'点'。 在那里,引力和密度是无限大的.
Including light, can only fall INTO that tiny point, and sometimes some glowing stuff orbiting around it 在那里，有一条线：所有一切，包括光，都最终落入那个小点。 偶尔，有些发光的东西，会环绕着它转圈圈.
and maybe some radiation. So basically, here 也许还有些辐射。所以，基本来说，
Is kinda bad, here is really bad, and here is safe. 这里：有点糟，这里：非常糟，这里：安全。
Also, black holes mostly come in two sizes. Don’t ask me why—we still aren’t sure. 还有，黑洞大致上分为两种尺寸。 别问我为什么，我们也不知道。
However, a black hole is also NOT a lot of things. 不仅如此，黑洞绝对不是以下：
It is not a hole, a cosmic vacuum cleaner, a portal to another 它不是一个洞；不是一个宇宙吸尘器；
dimension populated by unicorns and space potatoes, and absolutely NOT
a good place to vacation.
Ok, fine. I guess next you’ll need to know how to FIND a black hole.
Though technically black holes could just sneak up behind you, they likely won’t. The nearest
known one is 3,000 light-years away anyway. However, if you WERE to go looking
for one, there are a couple of good ways to find them. First, black holes
tend to mess with their environments, so you can sometimes use interesting clues, such as
A bunch of stuff orbiting what appears to be…nothing.
And second, as we mentioned before, there’s often glowing stuff orbiting around them, caused by, well,
when things get too close. So now that you’ve FOUND a black hole
and CLEARLY aren’t listening to me saying not to go, it’s time for a few important
safety considerations. First of all, the GOOD news is that
as long as you stay far away, black holes aren’t all that bad.
However, as you get close, you need to keep a few things in mind. The radiation near the black hole
can be extremely deadly,the chances of escape get slimmer the closer you get,
and, if you get close enough, you now have to worry about being stretched into a giant noodle
and time getting really weird. So, unless you have great radiation shields,
a faster-than-light spaceship, or you’re completely indestructible, you should probably
just stay away. Well, that pretty much sums up black holes
at least, before things start getting really complicated. But, before you go for real,
please refer to the handy brochure in your spacesuit pocket, since there’s quite a bit to remember.
Now then, remember your tickets, enjoy your trip, and please…
…be careful.