Researchers speculate the iron meteorite that made that impact, stretched for more than 60 miles before it crashed into the surface.

研究人员推测可能是铁质小行星的剧烈撞击，在撞击地表前伸展到超过60英里大。

Iron meteorites most likely come from the center of a large asteroid, one big enough that metals fell to the center via gravity.

铁陨石最有可能来自一个大的小行星的中心部分，一个足够大的金属通过引力作用而下降至其中心。