The European Space Agency (ESA) is optimistic ahead of the maiden launch of Europe’s Ariane 6 rocket. Speaking at the European spaceport in Kourou in French Guiana ahead of Tuesday’s planned launch, ESA Director of Space Transportation Toni Tolker-Nielsen said he was “96% confident and 4% deeply terrified.” “We have done everything we needed to do. Now we have to launch,” he added. The Ariane 6 is scheduled to fly into space for the first time between 1800 and 2200 GMT from the European spaceport in the overseas French territory. With the maiden flight, the ESA also aims to put behind the cris…