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The X-wind model for driving bipolar outflow in a young star. In this model, CAIs are envisioned to form near the X-point at Rx, from which they can be launched upward and outward into interstellar space or the outer solar system. The X-point is located less than 0.1 AU away from the star, far inside the current orbit of Mercury. From Shu FH, Shang H, Lee T (1996) Toward an astrophysical theory of chondrules. Science 271:1545–1552. Reprinted with permission from AAAS.
