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 ...

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 ...

When a group of scientists developing an engine for interstellar travel see their funding cut after a breakthrough leads to a ...

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 ...

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

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 ...

While you were sleeping, people just like you have actually begun to travel into space. We were invited behind Virgin Galactic’s velvet rope to meet them, and here is our advice: Get ready, and get in ...

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 ...

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 ...