The world's most complex observatory opened today in the Chilean Andes.
Here are some of the photos it captured:
Antennae Galaxies composite of ALMA and Hubble observations.
ALMA view of the Antennae Galaxies.
Antennae Galaxies, side-by-side comparison of ALMA and visible-light observations from the ESO Very Large Telescope.
Wide-field view of the region around the Antennae Galaxies.
Courtesy of European Southern Observatory