In an era of reusable rockets and near-daily access to space, NASA is still paying more than it did 30 years ago to launch ...

Lately, there's been plenty of progress in 3D printing objects from the lunar regolith. We've reported on several projects ...

The work is published in the journal Acta Astronautica. There are plenty of considerations when designing this type of mission. One of the biggest of them (literally) is how heavy the spacecraft is.