Space exploration has always relied on the continuous improvement of spacecraft propulsion systems. As humanity dreams of ...

Warp drives have long lived in the realm of science fiction, but the underlying physics that inspired them is very real and ...

Stem cells sent to the ISS return with signs of accelerated aging, revealing key risks for future 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 ...

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 ...

Astronauts and commercial space travelers are subject to damaging radiation and microgravity, along with other potential injuries. We need better ways to protect them. This article first appeared in ...

Cosmic speed limits can be a major inconvenience but they've rarely stopped science fiction in its tracks. When it comes to space travel, Albert Einstein's theory of relativity is a major ...

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, ...

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 ...

Astronaut families are quite similar to military families. If you're a space buff but haven't already seen the 1995 film "Apollo 13," it's worth the watch. It recreates the near-disaster mission ...