The final ALMA antenna arrives at Chajnantor

The final antenna for the Atacama Large Millimeter/submillimeter Array (ALMA) project is here seen arriving to the high site at the ALMA Observatory, 5000 metres above sea level. Its arrival completes the complement of 66 ALMA antennas on the Chajnantor Plateau in the Atacama Desert of northern Chile — where they will in future work together as one giant telescope.