in 2018 a printed prototype of the engine was tested at the german aerospace center in southern germany. in the future the idea is for the ariane engine to return to earth after its flight to be reused up to 5 times. it's an important building block for a reusable rocket in an ongoing research project a demonstrator a model prototype version was built to test how fuels perform in different regions of the engine designs. if tomorrow's a market is going to expand and to be bought that it is important that we have the capability to match it with a reusable orkut it is not the case today because the market today does not does not go totally new direction between must be ready and this is why we want to master the technologies which could go lower. it's one day to go for reusability. but 1st this edition of the arianne 6 rocket has to prove itself. the launch is planned for late 2020. the universe is appeased with particles that traverse entire planets stars and galaxies neutrinos their monk the most common elementary particles and a source of fascination for scientists in the antarctic an e