Tag Archives: craters

[ad_1] How did life on Earth come about? How did he survive the Aeon Hadean, a period in which repeated massive impacts carved craters thousands of kilometers across the earth’s surface? Those impacts turned Earth into a hellish place, where the oceans turned to vapor and the atmosphere was filled …

[ad_1] In its 4.6 billion-year history, Mars has received its fair share of punches from falling asteroids and rushing comets. Today the surface of the red planet is covered by no less than 43,000 impact craters larger than 5 kilometers; some ancient regions have received more blows than others. In …