Scientists have taken a close look at our activity within the solar system to determine where to look for signals from intelligent alien life. The findings apply if those extraterrestrials explore their own cosmic backyards in a way similar to us.

The research has implications for NASA’s goals to build a base on the moon and eventually conduct crewed missions to Mars.

Humanity has never been fully satisfied with this side of the horizon. Our ancestors crested mountains and crossed oceans until our species filled every corner of the world. We invented machines for exploring the deep oceans, for traveling at high speeds ...

Soon enough, though, it became clear that spaceflight is not, in and of itself, all that harmful to mammals, their hearts, or their brains. The biggest impact on astronauts is likely on bone density and equilibrium, both of which can be rebuilt when they return.

This week saw another dramatic test of SpaceX’s Starship, when the mighty rocket exploded once again, and both the upper and lower stages were lost. The test wasn’t a complete failure, as the upper stage did reach space for the first time, but it’s ...

Three books push back on a rising tide of optimism about space settlements. Elon Musk and Jeff Bezos are bitter rivals in the commercial space race, but they agree on one thing: Settling space is an existential imperative. Space is the place. The final ...

The International Space Station is the largest space outpost ever built, but it's not the only one up there and there a more on the way soon.

The Texas-based astronaut mission company Axiom Space is again partnering with SpaceX to launch four astronauts from the Kennedy Space Center in Florida. Liftoff of the Ax-4 mission is targeted for early on Wednesday, June 25. Read on for more details.

Stem cells age faster and become functionally exhausted in low Earth orbit, making crewed long-duration space travel even more challenging. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Human stem ...