The environments in space habitats and on the Earth are both closed-loop systems, only on vastly different scales.

The safety of launch team personnel is our highest priority, and all precautions will be taken to protect the Europa Clipper spacecraft.' ...

A few hundred eclipse chasers flocked to Chile's Rapa Nui to see annularity from the home of the mysterious moai.

SpaceX will launch Europe's Hera spacecraft toward the asteroid Dimorphos for a post-impact evaluation on Monday (Oct. 7), and you can watch the liftoff live.