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An illustration showing the 1 parsec scale area in a molecular cloud forming many new stars. There are two darker areas. The one at the bottom right is labeled “core” and has three hourglass-shaped cavities carved out by new stars. The dark area at upper right is labeled "cluster". It has four hourglass-shaped cavities. They are labeled "active outflows". Two larger hourglass-shaped light areas are at the top of the frame. They are labeled "fossil outflow cavities". The lighter areas at the outer edge of the frame are filled with abstract, wavey lines. They are labeled "turbulence on large and small scales." Solid wavy lines with arrows are labeled “Alven waves driven by turbulence”