Free Astronomy Magazine November-December 2025

44 ASTRO PUBLISHING NOVEMBER-DECEMBER 2025 A warped ring shaped by evolving planets by ALMA Observatory Nicolás Lira Jill Malusky Bárbara Ferreira U nusual shape of Fomalhaut’s debris ring shows evidence of sculpting by ancient planets, rewriting story of planetary system evolution. The bright star in the cen- ter, Fomalhaut, is surrounded by an T he bright star in the center, Fomalhaut, is surrounded by an ancient debris disk of uneven brightness. The disk is closer to the star in the south, where it is wider and fainter, and further from the star in the north, where the disk is narrower and brighter. The dotted ring shows the possible orbit of a planet im- plied by Lovell et al. [NSF/AUI/NSF NRAO/B. Saxton]