Overview

• 3 mm ALMA observations uncovered a central cavity and two outer gaps in what was once seen as a featureless MP Mus disk.
• Gaia astrometry detected a subtle stellar wobble indicating a companion orbiting between one and three astronomical units from the star.
• Computer models link the wobble and disk substructures to a gas giant estimated at three to ten times Jupiter’s mass.
• This marks the first indirect discovery of an embedded planet in a protoplanetary disk achieved by combining deep disk imaging with precise astrometry.
• Upcoming upgrades to ALMA and future facilities like the ngVLA are expected to extend this method to reveal more hidden young planets.