3D printers will make the tools, structures and habitats space pioneers need to survive in a hostile alien environment. They will enable long-term human presence on the Moon and Mars.

Called SPHEREx, the instrument will map 450 million galaxies and search for water molecules that may be clinging to space dust ...

Launched Tuesday night from California by SpaceX, the Spherex observatory will survey the sky every six months from an orbit over Earth's poles.