CENTRA announces that Professor Ilidio Lopes will be defending his Agregacao entitled "Stellar Seismology: Probing the Physics of the Sun and Stars", next Tuesday and Wednesday, 30 and 31 March at 11:00 in room PA-3 (Mathematics building). The detailed program is: Tuesday, 30 March, 11:00 am: Defense of CV and course Wednesday, 31 March, 11:00 am: Seminar "Stellar Seismology: Probing the Physics of the Sun and Stars" Room: PA-3 All of CENTRA members are invited and welcome.