Tipler published a paper on how to build a time machine, a Tipler Cylinder, back in 1974. This machine would enable you to travel back in time.

Time travel has been a popular science-fiction theme since H. G. Wells wrote his celebrated novel The Time Machine in 1895. But can it really be done? Is it possible to build a machine that would ...

Astrophysicist Ron Mallett believes he's figured out how to build a time machine that would allow someone to travel to the past.

It’s just a matter of time before we build a time machine that can take us into the far future, scientists say. Here’s what we know so far about the science.

A new concept for a time machine could possibly enable distant future generations to travel into the past, research now suggests.

So if spacetime is curved, and we run time along it simultaneously, then theoretically the bend can be turned into a loop, making time travel possible.

Available at the Archive Time Machines: Time Travel in Physics, Metaphysics, and Science Fiction. Paul J. Nahin. American Institute of Physics, 1993. How to Build a Time Machine. Paul Davies ...