The Atacama Large Millimetre Array (ALMA). Image credit: ESO/C. Malin

The Atacama Large Millimetre Array (ALMA) is an interferometer operating with up to 66 antennae simultaneously, providing the deepest and most detailed view of the sky at 0.3 to 3 millimeter wavelength. ALMA is located on the Chajnantor Plateau in the Chilean Andes and began scientific operation in 2011. It has been delivering data that provides unprescedented insights on objects ranging from proto-planetary disks to the highest redshift galaxies.