to cope with unresolved stellar enigma and stellar oscillation challenges and offers a great opportunity to benefit from an access to the best astronomical site on Earth –Dome C–. Indeed, Chadid, Vernin, Preston et al. implement, for the first time from the ground, a new way to study the stellar oscillations, pulsations and their evolutionary properties with long uninterrupted and continuous precision observations over 150 days, and without the regular interruptions imposed by the Earth rotation. PAIX achieves astrophysical UBVRI bands time-series measurements of stellar physics fields, challenging photometry from Space. The Antarctic Search for Transiting ExoPlanets (ASTEP) programme is composed of two telescopes: a 10 cm refractor installed in 2008, and a 40 cm telescope installed in 2010 and upgraded in 2022. Climate The climate at Dome C where Concordia Station is located is frigid all year round, being one of the coldest places on Earth. It has a polar ice cap climate (Köppen EF), with maximums ranging from in December to in May, mean ranging from in December to in May and minimums ranging from in December to in May. The annual average air temperature is . The station has never recorded a temperature above freezing; the warmest temperature recorded was in January. Temperatures can fall below in winter, and the coldest recorded temperature was in August 2010; one of the coldest temperatures ever recorded on Earth. Humidity is low and it is also very dry, with very little precipitation throughout the year. Dome C does not experience the katabatic winds typical for the coastal regions of Antarctica because of its elevated location and its relative distance from the edges of the Antarctic Plateau. Typical wind speed in winter is 2.8 m/s. Winterovers While the station has been in use for summer campaigns since December 1997, the first winterover (February to October) was only made in 2005. During this period, the station is inaccessible, requiring total autonomy. First winter-over (DC01 – 2005) The first winter began in mid-February 2005, with thirteen wintering (eleven French people and two Italians): Michel Munoz: station leader, plumber, Roberto Dicasilati: physician, Christophe Mozer: powerhouse chief, Pascal Bordais: radio, electronics, computers, Emanuele Salvietti: glaciologist, Claire Le Calvez: technical chief, Michel Galland: electrician, Jean-Louis Duraffourg: chef, Abdelkarim Agabi (Karim Agabi): astronomer, Stéphane Beausire: boilermaker, welder, Jean Elegoet: vehicle mechanic, Jean-François Jurvilliers: multipurpose technician, Guillaume Dargaud: climatologist, (under contract with the Italian National Antarctic Research Program