Black holes are hard to find. They have such strong gravity that light can’t escape them, so scientists must rely on clues from their surroundings to find them.

When a star weighing more than 20 times the Sun runs out of fuel, it collapses into a black hole. Scientists estimate that there are tens of millions of these black holes dotted around the Milky Way, but so far we’ve only identified a few dozen.

This image from 2001 is an artist’s impression of a black hole accretion disk. Around many black holes is an accretion disk of material emitting energy as it falls into the black hole.

Learn more about black holes.

Image Credit: XMM-Newton, ESA, NASA


黑洞很难被发现。它们有很强的引力,光线无法逃脱,所以科学家必须依靠它们周围环境的线索来找到它们。

当一颗重量超过太阳20倍的恒星耗尽燃料时,它就会坍缩成黑洞。科学家们估计,银河系周围分布着数千万个这样的黑洞,但到目前为止,我们只发现了几十个。

这张2001年的照片是一位艺术家对黑洞吸积盘的印象。许多黑洞周围都有一个吸积盘,当物质落入黑洞时,它会释放能量。

了解更多有关黑洞的信息

图片来源:XMM-Newton, ESA, NASA

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