JOE TUCCIARONE / SCIENCE PHOTO LIBRARY JOE TUCCIARONE / SCIENCE PHOTO LIBRARY
Solar nebula, artwork. T. Tauri stage of a solar nebula. This illustration depicts how the solar nebula may have appeared about 5 billion years ago. The newborn sun may have undergone a T. Tauri stage in which jets of gas were emitted from the top and bottom of the flattened, dusty disk in which the planets of our solar system were beginning to form.
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