Everett, Allen.
Time travel and warp drives : a scientific guide to shortcuts through time and space / Allen Everett and Thomas Roman.
Presents the current understanding of the nature of time and space, and an approachable explanation of Einstein's theory of special relativity; then goes on to connect these to possible time travel along with the accompanying paradoxes involved.
Time travel.
Space and time.
Nonfiction.
Roman, Thomas.