After more than two years without total lunar eclipses visible from Europe, next July 27 the Moon will cross the shadow of the Earth. With a totality of 102m, it will be the longuest lunar eclipse of the XXIth century. The phenomon will be broadcasted in live from Namibia, through sky-live.tv with the cooperation of the European Project STARS4ALL and the Observatory of high energies HESS, and from the Museum of Science and the Cosmos in Tenerife, through the Facebook channel of the Museums of Tenerife. The Instituto de Astrofísica de Canarias (IAC) participates in these two activities.