Search PBS Space Time


2019-04-03: The Edge of an Infinite Universe

  • 10:22: Those circle segments represent the straight lines of a hyperbolic geometry projected onto the disk.

2017-02-15: Telescopes of Tomorrow

  • 11:57: The hyperbolic geometry is just what you did when you map the space-time interval to a third dimension.

2016-11-16: Strange Stars

  • 11:45: ... space will definitely have weird angles, less than 180 degrees for a hyperbolic geometry, more than 180 for a spherical ...
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