At an altitude of 2,877 meters, the Pic du Midi de Bigorre is a popular destination for both nature lovers and those fascinated by astronomy. This weekend, on Saturday, October 10, and Sunday, October 11, the observatory will open parts of its facilities to the public as part of the Science Festival. Visitors will have the chance to explore the largest telescope in France, observe the Sun through specialized equipment, and attend planetarium sessions. This is a unique opportunity to learn how scientists study the cosmos from this high-altitude location. One of the highlights of the event is a visit to the Bernard Lyot Telescope (TBL), which is the largest telescope in France. Located inside a dome at the observatory, this telescope enables researchers to study stars and other celestial objects. During the festival, visitors will be guided by astronomers through the telescope's inner workings. Departures for these guided tours will occur every 45 minutes, and registration will be done upon arrival at the summit, subject to availability. Another attraction is the coronagraph dome, which is used for solar observation. While the Sun is much closer to Earth than distant stars, studying it is still challenging due to its intense brightness. This brightness can obscure features in the Sun's environment that scientists want to observe. The coronagraph helps by masking the Sun's bright disk, allowing researchers to study its corona—the outer part of its atmosphere. This instrument is essential for understanding solar activity and its potential effects on Earth. In addition to the telescope and coronagraph visits, the Science Festival includes free planetarium sessions and conferences. These events offer an engaging way to explore astronomy, explaining celestial phenomena and the research methods used by scientists. The planetarium, in particular, provides a visual representation of the night sky and helps visitors understand the movements of celestial bodies. It is important to note that while the festival activities are free once on site, access to the Pic du Midi requires a paid ticket that includes the cable car ride and the site visit. Weather conditions can also affect the experience, and the festival does not guarantee clear views of the stars or planets. The events will take place from 10 a.m. to 5 p.m. on both days at the Pic du Midi de Bigorre, accessible by cable car from La Mongie in the Hautes-Pyrénées. Adult tickets cost 59 euros, and children's tickets are 44 euros. Registration for dome visits will be handled upon arrival, depending on availability. Before visiting, it is advisable to check the weather and book tickets in advance, as temperatures at this altitude can be much lower than in the valley.