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 ...

Interplanetary travel may become possible this century through Mars missions, space habitats, and propulsion advances, but ...

After nearly two years on pause, Virgin Galactic is selling tickets again. The catch is the price. A seat now costs $750,000. That number is not a typo. It is also a sharp increase from the company's ...

Last May I received this text message: “I know it’s been a while. We’re approaching our final space flight with our current spaceship. I thought this could be a great time for you to see the ...

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 ...

WASHINGTON (Reuters) - The human body was not built for spaceflight, with its microgravity conditions, exposure to high-energy radiation and other issues. As a result, trekking beyond the Earth's ...

Astronaut families are quite similar to military families. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. If you're a space buff but haven't ...

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 ...