Europe's Ariane 6 heavy-lift rocket took to the skies for the fourth time ever today (Nov. 4). An Ariane 6 lifted off from Europe's Spaceport in Kourou, French Guiana today at 4:02 p.m. EST (2102 GMT; ...

VERNON, France — In a tightly controlled manufacturing hangar west of Paris, workers put the finishing touches on an enormous silver-colored engine. In just a few days, a similar machine will help ...