A rare planet-forming disk around a young triple-star system in the Orion constellation has been tipped over by a river of gas over 1 trillion miles (1.6 trillion kilometers) long. The discovery, made at radio wavelengths with ALMA, the Atacama Large Millimeter/submillimeter Array in Chile, could explain why astronomers keep finding planets with orbits that are drastically misaligned with the rotational axes of their stars.GW Orionis is a triple…