Seeing the birth of stars

ALMA is the world's largest radio telescope that can see stars and planets being born millions of light-years away.

Hear from the people who work there, in one of the highest, driest places on Earth, 5,000m up in Chile's Atacama Desert.

(Image: Two galaxies grazing past each other. Credit: M Kaufman; B Saxton (NRAO/AUI/NSF); ALMA (ESO/NAOJ/NRAO); NASA/ESA HST)