This week ESA (European Space Agency) has made a huge step forward Europe's autonomus access to space. After many pre-launching tests, this one served as a critical rehearsal for the actual launch as the new Vulcain 2.1 engine was used. During the simulation they tested the durabilty of the engine by full hot-fire trial which burned 150 000 kilograms of supercooled liquid oxygen and hydrogen fuel. The whole procedure took about two hours and since everything went smoothly, the final test is planned for december and will show wheter Ariane 6 is ready to secure European's position in space exploration.
Here is the link if you're interested in the details: https://ie.social/NE5KP