“blackhole” 黑洞-这个名称是怎么来的?

2019.04.11
“blackhole” 黑洞-这个名称是怎么来的?

太空中充满了神秘的事物,这些令人着迷的事物中就有黑洞。尽管黑洞仍是未解之谜,但科学家已经发现了许多有关它的趣事。
为什么黑洞是黑的?

Space holds many mysteries. One of the most fascinating of these is black holes. Although there are still many unanswered questions about black holes, scientists have discovered many interesting things about them.

为什么黑洞是黑的?
颜色的呈现是自然现象——光折射的效果。这就是为什么我们可以看到不同颜色的自然事物,红的、蓝的、绿的。但黑洞却不折射光,因此它就是黑色的。

Why do black holes appear black?
Color is an effect of light reflection – a natural phenomenon. It is why we perceive some things as red, some as blue, and others as green. Black holes do not reflect light.

为什么它被称之为“洞”?
在地球上因为有引力的帮助,我们才能站在地面上,但比如在月球上,引力微弱到几乎不存在。因此登月的宇航员才可以在月球上跳得很高。黑洞有着很强的引力,强到几乎能吸走所有东西。

Why are they holes?
On Earth, gravity helps us stay grounded. On the moon, for example, there is very low gravity. That is astronauts can jump very high on the moon. Black holes have very strong gravity – so strong that no object can escape being sucked into it.

为什么会有黑洞?
黑洞形成的一种方式是引力坍缩,这是星际物质死亡后在自身物质的引力作用下向内塌陷的过程。如果星际物质的质量很大,它就会变成黑洞。

How do black holes come into existence?
One way black holes form is from gravitational collapse. When stars run out of fuel, they die, collapsing in on themselves. If these stars have a very large mass, they form black holes.

黑洞是如何产生的呢?
黑洞形成的一种是由引力塌陷引起。当恒星燃料耗尽死去,塌陷在自身上,如果这颗恒星的质量够大,那就会形成黑洞。

Is there any way to spot a black hole?
Because they do not reflect light, black holes are very difficult to observe. But scientists have found a solution. Black holes can be noticed when particles fall into them. Because a lot of energy is created when this happens, it can be detected. Black holes can also be discovered by observing the movement of other objects around them. The direction of their orbit changes when they are near a black hole.

黑洞大小不一致吗?
没错!有四种大小的黑洞:微型的,一般大小的,中等大小的以及超大的。如果黑洞吸引了许多星际物质或者与其它黑洞结合,它们就会变得非常大。这就是超大黑洞。科学家认为超大黑洞一般存在于银河系的中心。

Do black holes differ in size?
Yes, they do. There are four types of black holes: micro, stellar, intermediate mass and supermassive. If black holes attract many stars or combine with other black holes, they become very big. These are called supermassive black holes. Scientists say there is a supermassive black hole at the center of the Milky Way, our galaxy.

黑洞会消失吗?
理论上说黑洞会因辐射消失,但是这却未经证实。

Can black holes disappear?
A theory claims that yes, they can disappear due to radiation. But this has not been proven yet.

太空中还有好多我们所未知的,科学家也仍然在探索新的事物、有趣的事物。可能你长大后也会成为一名科学家,并且解答这些未解之谜!

There are many things we don’t know about space, and scientists are still working on discovering new and interesting things. Maybe you will become a scientist and be the one to find answers to these questions!

 

*图片来源Image source:http://commons.wikimedia.org