Dubbing these “closed timelike geodesics” (CTGs), Ralph and Sajeendran explain in the paper: “Such a CTG would be ideal for ...

If traveling into the past is possible, one way to do it might be sending people through tunnels in space. by raggio5 via Pixabay Have you ever dreamed of traveling through time, like characters do in ...

In Star Trek, the crew of the Enterprise could cross galaxies in the time it takes us to fly from Delhi to Dubai. While long considered pure science fiction, the show’s most fantastical invention, the ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. View of Marilyn Lovell (second left), along with her children, as they watch the liftoff of a ...

Time dilation, a real phenomenon, means astronauts can age more slowly than people on Earth during high-speed space travel.

Your body's blood-making stem cells, hematopoietic stem cells (HSC), are like factory managers who work best when calm and rested. But when stress hits, like infection or injury, they spring into ...

Traveling to space is brutal on the body. Spaceflight can cause astronauts’ bones to lose density, their brain and eye nerves to swell, and their genes to change expression. Research suggests spending ...

Whether space-time exists should neither be controversial nor even conceptually challenging, given the definitions of “space-time,” “events” and “instants.” The idea that space-time exists is no more ...

On the Wednesday, Sept. 24, 2025 episode of The Excerpt podcast: Are humans on the precipice of not only being visitors to outer space, but also becoming permanent residents? Namrata Goswami, ...

As the number of space travelers is increasing through commercial missions, it becomes more important to understand how space affects the human body. A team led by researchers at Baylor College of ...

While astronauts do not leave home to go to war or face combat, families of space travelers may share a few commonalities ...