Asteroid Toutatis

Brad De Long mentions the flyby of the Asteroid Toutatis (via Obsidian Wings) and makes comment about the long but inevitable odds that a sizeable planetoid will hit the Earth, eventually.
Ironically, this dovetails with my watching Babylon 5, Season 1 last night (thanks to Netflix). I was watching Infection, the episode where Commander Sinclair succinctly puts the “eggs in one basket” danger of NOT expanding off of Earth, and into the Universe.
Because it would be a shame as far as the Universe is concerned to lose Lao-Tsu, and Jesus, and Newton, and Einstein, and Rodin, Euclid, and the rest of the greatness of humanity because we decided to stick our head in the sand.
We’re an explorative, inquisitive species. If we weren’t, we’d all still be in Africa. I think of the proto Native Americans, crossing the Bering Strait and exploring a completely unknown land. I think of the Polynesians, exploring the largest Ocean on Earth with small boats, intuition and hard-earned skill.
“It’s not safe out here! It’s wondrous, with treasures to satiate desires both subtle and gross. But it’s not for the timid.”
Yes, Q, from Star Trek The Next Generation.