Circumplanetary Disk Star AS 209 Scientists studying the young star AS 209 have detected gas in a circumplanetary disk for the first time, which suggests the star system may be harboring a very young Jupiter-mass planet. Science images from the research show (right) blob-like emissions of light coming from otherwise empty gaps in the highly-structured, seven-ring disk (left). Credit: ALMA (ESO/NAOJ/NRAO), J. Bae (University of Florida) ALMA Makes First-Ever Detection of Gas in a Circumplanetary Disk Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) to study planet formation have made the first-ever detection of gas in a circumplanetary disk. What’s...