"This is the sort of book that justifies fatwahs. If WWIII occurred right now, we could die happy knowing Baxter would never write again. If a dinosaur killing asteroid was headed for Earth and I knew Baxter had another book coming up, I would campaign for letting the rock hit, since it is obviously the work of a benovelent deity trying to save us from another Titan."

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But to carve the Grand Canyon, Earth required millions of years. To excavate Meteor Crater, the universe, using a sixty-thousand-ton asteroid traveling upward of twenty miles per second, required a fraction of a second. No offense to Grand Canyon lovers, but for my money, Meteor Crater is the most amazing natural landmark in the world.

— Neil deGrasse Tyson