The 16th ALMA Public Lecture titled “Mysteries of the Galaxies and Planets Explored by ALMA” was held in the Science Hall of the Sapporo Science Center. This time, three lectures were presented: “ALMA- a Gigantic Telescope under Construction in the Andes” by Masato Ishiguro (ALMA-J Project Director); “Unveiling the Big Collision of Galaxies with ALMA” by Daisuke Iono (Research Expert at ALMA-J Project Office); and “The Birth of Stars in the Galaxies” by Kazuo Sorai (Associate Professor at Hokkaido University). The picture shows Masato Isiguro, giving an opening speech. The lecture held on a fine Sunday was attended by more than 50 people. They listened attentively to the talks on the progress of the ALMA project and the latest development of space research.