So-called Super-Jupiters apparently clean up after themselves. The Atacama Large Millimeter/submillimeter Array (ALMA) reveals cavities in the disc surrounding 4 stars, caused by two processes: intense winds coming off the young stars and the forming planets aggregating dust, by gravity, as they become more massive.
Credit: ALMA (ESO/NOAJ/NRAO)/ESO/M. Kornmesser/edited by Space.com
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