**Geometry and Astronomy: Pre-Einstein Speculations of Non-Euclidean Space**

by Helge Kragh

**Publisher**: arXiv 2012**Number of pages**: 76

**Description**:

The recognition that physical space (or space-time) is curved is a product of the general theory of relativity, such as dramatically shown by the 1919 solar eclipse measurements. However, the mathematical possibility of non-Euclidean geometries was recognized by Gauss more than a century earlier, and during the nineteenth century mathematicians developed the pioneering ideas of Gauss, Lobachevsky, Bolyai and Riemann into an elaborate branch of generalized geometry.

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