12 years of W.M. Keck Observatory imagery of star system HR 8799 have been time-lapsed. The system hosts four planets that are more massive than Jupiter. br br Video making & motion interpolation: Jason Wang (UC Berkeley)br Data analysis: William Thompson (UVic) & Christian Marois (NRC Herzberg)br Orbit determination: Quinn Konopacky (UCSD)br Data Taking: Bruce Macintosh (Stanford), Travis Barman (University of Arizona), Ben Zuckerman (UCLA)br Data from the W. M. Keck Observatorybr Animation: NASAbr Edited by Space.