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The MWC 758 planetary system observed by the Large Binocular Telescope Interferometer (LBTI) at infrared wavelengths. The newly discovered planet shows up as a dot in addition to the spiral arms of this protoplanetary disc. K. Wagner et al. The MWC 758 planetary system observed by the LBTI at infrared wavelengths. Theoretical simulations suggest that the newly discovered planet, "c," is likely responsible for driving the spiral pattern in the disk of gas and dust surrounding the young star.