Rubén Fedriani

In a kitchen where you're simultaneously boiling soup, frying meat, and baking bread, everything happens in one pot. That's roughly what the central molecular zone (CMZ) looks like — a dense clump of gas at the very heart of the Milky Way.

Stars are born in cold clouds of cosmic dust and hydrogen. Inside these cocoons, protostars — the cores of future suns — were long thought to be just hot clumps. But it turns out many of them are powerful accelerators: they shoot out narrow jets of gas that, slamming into surrounding matter, produce invisible gamma-ray light.

In a dense cloud of gas and dust where massive stars are born, two young stars recently passed very close to each other. Their dance has lasted only about sixty years, and astronomers have now seen it in detail for the first time.