From a spaceport on the edge of South America, Europe extended its eyes into the sky — completing a constellation of satellites designed not merely to observe weather, but to understand it in near-real time. The MTG-I2 satellite, now fixed 36,000 kilometres above Earth, joins two predecessors to form a unified atmospheric portrait that meteorologists have long sought. In an era when extreme weather grows less predictable and more consequential, this achievement reflects a quiet but profound commitment: that knowing what the sky is doing, moments before it acts, may be one of the most important