 Mark Lowen. The makers of Europe's new space rocket have a simple selling point. It may be a bit smaller than its rivals, it may not lift quite so much weight, but the Ariane 6 is cheaper and simpler to launch. In fact, the launch of Ariane 6 has been much delayed, but all being well, it'll lift off from French Guiana later on Tuesday, with the aim of becoming the go-to workhorse for European governments and companies who want to put satellites in orbit. Jonathan Amos reports.