The lecture will be given by the researcher from the Instituto de Astrofísica de Canarias (IAC) and Titular Professor at the University of La Laguna (ULL), César Esteban, next Thursday, 12th December at 19:00 h in the Museum of Science and the Cosmos, of Museums of Tenerife, in the framework of the acts commemorating the V Centenary of the first Circumnavigation of the World . The first circumnavigation of the world was an epic which gave rise to the discovery of new territories, seas, islands, and cultures, but also new parts of the sky previously unknown to Europeans. This talk, (free