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.

Maria Konnikova on the ability of humans to imagine the future and the possibility of time travel, and how it was affected by technology.

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 ...

Some days you just want to get in your time machine and go hang out with Mark Twain. The problem is that time machines are currently limited by the fact that they don’t exist. You can listen to ...

TIME travel into the distant future or ancient past is a possibility, according to science, but the requirements for a working time travel machine can be tricky to achieve.

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

In the movie Back to the Future, the time machine requires 1.21 GigaWatts to run. What does this even mean? What power source options would you have?

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 ...