天体物理学家研究发现,宇宙中的许多小天体含有比地球丰富得多的矿藏。1986年发现的一颗编号为1986DA的小行星,直径不足2千米,却贮藏有1万吨黄金、10亿吨镍、100亿吨铁!距地球较近的“阿波罗”小天体,有1000颗～2000颗直径约为100米的小行星。它们当中有一些几乎是纯金属球,除铁外,还有丰富的镍、钴、铬、锰、铝、金、铂等。科学家们提出到宇宙开矿,所以,天外来金也有可能。 Astrophysicists have found that many small objects in the universe contain minerals that are much more abundant than the earth. A 1986 DA asteroid discovered in 1986, less than 2 kilometers in diameter, is stored with 10,000 tons of gold, 1 billion tons of nickel and 10 billion tons of iron! The “Apollo” small objects that are closer to Earth , There are 1000 ~ 2000 asteroids with a diameter of about 100 meters. Some of them are almost pure metal balls, in addition to iron, there are rich in nickel, cobalt, chromium, manganese, aluminum, gold, platinum and so on. Scientists have proposed to open up the universe, so extraterrestrial gold is also possible.