Scientists warn that radiation and microgravity pose a major threat to human reproduction in space. Understanding these ...

As private companies race to build orbital habitats and government agencies sketch out Mars timelines, a fundamental ...

Blast off.

As space tourism gets cheaper and missions keep getting longer, scientists are now raising a question that used to be limited to science fiction. What happens if humans try to have children in space?

The Artemis II mission, which will return US astronauts to lunar space, has run into problems that have critics demanding NASA remove the crew from the flight for safety reasons. The bigger question ...

Humans haven’t been back to the moon since the Apollo moons program ended over five decade ago. The reasons why go beyond science, according to experts.

It's official. Not a single person under the age of 25 has lived a day where there has not been a human orbiting Earth − and that is likely to never change. On Nov. 2, 2000, Expedition 1 arrived at ...

The first time you experience weightlessness in space, Tom Marshburn told me, all the noise and pressure of launch suddenly disappear. One moment, the roar of engines shakes every bone in your body; ...

Today, guardians go to space only in popular misconception, but tomorrow? There might be solid tactical reasons to put Space Force personnel in orbit, argues a new report from the Mitchell Institute ...

This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology. The case against humans in space Elon Musk and Jeff Bezos are ...