Tag Archives: space

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by @MrPrudence: The Wave is a prominent geological feature located on the Colorado Plateau near to the Utah and Arizona border. Composed of striated waves of cross-bedded sandstone, the landscape appears to have the quality of a frozen liquid, its … Continue reading

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(Source: http://sapiens.revues.org/738)

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http://video.ted.com/assets/player/swf/EmbedPlayer.swf rats’ brains, and presumably ours, tessellate the plane surface we walk on with multiple overlapping triangular grids (is there a mathematical reason triangles are optimal? euler characteristic, perhaps?) “path” neurons in the hippocampus fire as we cross these grids … Continue reading

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This gallery contains 3 photos.

Categorial decomposition of Galilean spacetime. Sean Carroll tells us that it was Galileo who first si rese conto che motion can be separated into: motion in the x direction — ẋ or x′[t] motion in the y direction — ẏ or y′[t] motion … Continue reading

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William Thurston, geometrizer of manifolds Sometimes I like to spend an hour looking at something I barely understand. The inside of this guy’s mind has got to be so interesting, but it’s been shaped by geometry rather than words, so … Continue reading

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If you put your hand up in the night, away from L.A., and look at a dark spot of the sky the size of a dime—with a large enough telescope, you could see 100,000 galaxies there. Stars explode once every … Continue reading

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Come on, guys, a Death Star isn’t THAT expensive!

Some economics students from Lehigh University made the news a few weeks ago with their estimate that the raw materials (a quadrillion tons of steel) in the Death Star would cost £541,261,000,000,000,000 at today’s prices — a billion, billion dollars. Of course … Continue reading

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