While the concept of time travel has long captured public imagination, modern physics actually approaches time in a much more ...

Warp drives have long lived in the realm of science fiction, but the underlying physics that inspired them is very real and surprisingly precise. As researchers probe the edges of general relativity ...

NASA aims to send astronauts to Mars by the 2030s. But with current technology, the journey will be years long. That's why NASA invested in a new type of rocket that could shorten the trip to just 2 ...

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 ...

Cosmic speed limits can be a major inconvenience but they've rarely stopped science fiction in its tracks. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

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 ...

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 ...

Scientists investigate psychological responses to long-term experiences of lack of natural light, spatial confinement, ambient noise, living and working with the same small group of people, and mental ...