Black holes were theorized in 1783
黑洞理论在1783年已出现

Astronomers may not believe in Hell, but most believe in black regions of space. These cosmological hells truly exist in the centers of many galaxies. Such galactic black holes are collapsed objects having millions or even billions of times the mass of our sun crammed into a space no larger than our Solar System. According to classical black hole theory, the gravitational field around such objects is so great that nothing, not even light, can escape from their tenacious grip. The actual concept of an object so massive that light could not escape was suggested in 1783 by the geologist John Michell.
天文学家们可能不相信有地狱的存在，但他们确实相信宇宙中有某处黑色区域。这些宇宙地狱在很多星系里的确存在，星系中的黑洞需要以质量数百万倍甚至数亿倍于太阳的物体来填满，而这些黑洞的体积也就太阳系那么点大。根据经典黑洞理论，这些物体周围的引力场之大使得任何东西都无法逃脱其魔爪，连光都不行。这一说法的确切成型时间为1783年，是由地质学家米歇尔提出的。