This is the trailer of ALMA, the largest astronomical project in existence.
A state-of-the-art telescope to study light with wavelengths of about one millimetre, shining from some of the coldest objects in the Universe, ALMA is a cooperation of the European Southern Observatory (ESO), together with its international partners. The site of ALMA is the 5000-m altitude Chajnantor plateau in northern Chile, one of the driest places on Earth.
A version in German is available here.
ESO, ALMA (ESO/NAOJ/NRAO), C. Malin (christophmalin.com), P. Horálek, Liam Young, B. Tafreshi (twanight.org), J.J. Tobin (University of Oklahoma/Leiden University), M. Kaufman, Theofanis N. Matsopoulos, H.H.Heyer, S. Argandoña and H. Zodet.