Black Holes Explained – From Birth to Death

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昨天(4月10日)晚上9点多,人类历史上首张黑洞照片在中国上海和台北、比利时布鲁塞尔、智利圣地亚哥、日本东京和美国华盛顿全球六地同时对外发布,这是人类首次通过图像直观的看到黑洞。那么黑洞到底是什么?带你走进黑洞出生到死亡的全过程。

Black holes are one of the strangest things in existence.

They don't seem to make any sense at all.

Where do they come from. . .

and what happens if you fall into one?

Stars are incredibly massive collections of mostly hydrogen atoms that collapsed from enormous gas cloud under their own gravity.

In their core, nuclear fusion crushes hydrogen atoms into helium releasing a tremendous amount of energy.

This energy, in the form of radiation, pushes against gravity, maintaining a delicate balance between the two forces.

As long as there is fusion in the core, a star remains stable enough.

But for stars with way more mass than our own sun the heat and pressure at the core allow them to fuse heavier elements until they reach iron.

Unlike all the elements that went before, the fusion process that creates iron doesn't generate any energy.

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