By train
The centre Paul Langevin is located near the Gare de Modane, which is a large railway station with a high-speed TGV trains. It which connect Paris - Chambéry - Turin - Milan. To reach the centre from there, there is a direct bus connection (S52) which takes about 40 min (9 euros). The time table is available here.
The bus starts at the stop “Gare Routière" at the Modane train station. The bus stop “Le Coin” is near the Center. Check here for details
By plane
Nearby airports are Turin, Geneva, and Lyon. Usually, once at the airport, you can reach Aussois by train (see below) from the nearest station or renting a car.
By car
The centre Paul Langevin (19 Rue du Coin, 73500 Aussois, France; 45.232713688970605, 6.744431203165686) is about 11 km away from the Frejus tunnel motorway connecting Torino and Albertville/Chambery/Grenoble.