标签: billion

种类: 日期 | 标题 | 意见 | | 注释 | 随机的 升序
看法:

Asteroid that hit Earth 2 billion years ago was up to 15 MILES wide

5 意见0 注释

Asteroid that crashed into Earth two billion years ago and formed the planet's largest crater in South Africa was up to 15 MILES across - even wider than the one that killed off the dinosaursA space rock formed what t...