Ariane Next is not a real thing yet. Its just some concepts that some of the European space agencies are playing around with. To actually build a next generati

Ariane Next is not a real thing yet. Its just some concepts that some of the European space agencies are playing around with. To actually build a next generation Ariane rocket they will need a huge amount of political buy-in from the ESA memeber states. And they will not get that anytime soon. The barley got the Ariane 6 over the finish line. It will be many, many years before they even seriously start an actual design process for Ariane Next.