光线可以被引力弯曲是根據現代的廣義相對論所預言的，。。。但是已经被实验证明是对的。

“黑洞是根據現代的廣義相對論所預言的，。。。迄今为止，黑洞的存在已被天文学界和物理学界的绝大多数研究者所认同。为什么会被研究者认同，因为有实验证据证明它的存在。 请读下一段，摘自wikipedia。

 

"Despite its invisible interior, a black hole can be observed through its interaction with other matter. A black hole can be inferred by tracking the movement of a group of stars that orbit a region in space. Alternatively, when gas falls into a stellar black hole from a companion star, the gas spirals inward, heating to very high temperatures and emitting large amounts of radiation that can be detected from earthbound and Earth-orbiting telescopes.

Astronomers have identified numerous stellar black hole candidates, and have also found evidence of supermassive black holes at the center of galaxies. In 1998, astronomers found compelling evidence that a supermassive black hole of more than 2 million solar masses is located near the Sagittarius A* region in the center of the Milky Way galaxy. Recent results indicate that the supermassive black hole is more than 4 million solar masses."

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• 相對論发明一百多年了，听说连光多普勒效应都没搞清楚。 -sgc12345- ♀ (173 bytes) () 02/21/2011 postreply 12:44:18