Best Astronomy Books - Space

Space is the boundless, three-dimensional extent in which objects and events occur and have relative position and direction. Physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of the boundless four-dimensional continuum known as spacetime. In mathematics one examines 'spaces' with different numbers of dimensions and with different underlying structures. The concept of space is considered to be of fundamental importance to an understanding of the physical universe although disagreement continues between philosophers over whether it is itself an entity, a relationship between entities, or part of a conceptual framework.

The Great Andromeda Galaxy (M31) Single 40 minute exposure with Fujichrome 400F Provia using a Meade LXD75 8" f/4 Schmidt Newtonion telescope.
Image Credit; Peter Kennett September, 2005.
Text credit; Wikipedia