On an outside view asteroids seem like an astronomically (har har har) unlikely way to go, since the Earth’s been around a long time and has only received a few extinction-impact asteroids. (Anthropic considerations should discount the likelihood of asteroids that would wipe out all life on Earth, but not ones that just rearrange it like KT.)
On an outside view asteroids seem like an astronomically (har har har) unlikely way to go, since the Earth’s been around a long time and has only received a few extinction-impact asteroids. (Anthropic considerations should discount the likelihood of asteroids that would wipe out all life on Earth, but not ones that just rearrange it like KT.)