Grammy winner Questlove joins TODAY to talk about “Time for a Change,” the second book in his electrifying science fiction series “The Rhythm of Time.” He shares what readers can expect from the book ...

Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that describe gravity, quantum fields and the structure of spacetime now allow ...

Star Trek has used time travel plenty of times across the various shows in the franchise, and we think these are the best time travel stories of them all.

For decades now I have been devoted to shaping the future, particularly when it comes to bridging the vacuum void between the Earth and Mars. And If I had the luxury of rocketing into the decades ...