ALMA antennas

The place where ALMA antennas operate, at 5000 meters of altitude, is truly inhospitable. Not only because of the intense desert sun, but also because during the so-called "Altiplano winter", in the months of January and February, meters of snow can fall. In the image, ghostly antennas during an intense snowstorm. © Juan Carlos Rojas - ALMA (ESO / NAOJ / NRAO)