Others arguing that the odds against such a pattern of impacts are large, postulate a single event-the impact of an object bigger than any asteroid the solar system now contains.
The third possibility is that the northern lowlands result from impacts. Some researchers suggest they formed as a series of big overlapping impact craters. Others arguing that the odds against such a pattern of impacts are large, postulate a single event-the impact of an object bigger than any asteroid the solar system now contains.作者: heyleejoe 时间: 2016-3-24 17:19:52