Two-Spiral-Arm Structure (IMAGE)

NASA/Goddard Space Flight Center

Two-Spiral-Arm Structure

Caption

A computer model reproduces the two-spiral-arm structure; the "x" is the location of a putative planet. The planet, which cannot be seen directly, probably excites the two spiral arms.

Credit

Photo Credit: NASA, ESA, ESO, M. Benisty et al. (University of Grenoble), R. Dong (Lawrence Berkeley National Laboratory), and Z. Zhu (Princeton University)

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