Ariane 6 is a European expendable launch system developed by ArianeGroup on behalf of the European Space Agency (ESA). It replaces the Ariane 5, as part of the Ariane launch vehicle family. The stated motivation for Ariane 6 (as of 2015) was to halve the cost compared to Ariane 5, and increase the capacity for the number of launches per year (from six or seven to up to eleven). Ariane 6 is designe... Wikipedia