Jets Are a Real Drag

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This composite photograph of Herbig-Haro 211 shows submm data from the Submillimeter Array (blue and red) and near-infrared data from the European Very Large Telescope (gray). The SMA data were color-coded blue for approaching (blue-shifted) material ...
This composite photograph of Herbig-Haro 211 shows submm data from the Submillimeter Array (blue and red) and near-infrared data from the European Very Large Telescope (gray). The SMA data were color-coded blue for approaching (blue-shifted) material and red for receding (red-shifted) material. The VLT shows shocked molecular hydrogen emission produced by the jet. Credit: SMA/Chin-Fei Lee & VLT/Naomi Hirano

Astronomers have found the best evidence yet of matter spiraling outward from a young, still-forming star in fountain-like jets. Due to the spiral motion, the jets help the star to grow by drawing angular momentum from the surrounding accretion disk.


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